Definition life expectancy
Answers
The definition of life expectancy is the average age that is expected for people to live.
Life expectancy will differ in different countries and for people of different medical backgrounds.
Related Questions
a major difference between tundra (et) and subarctic (dfc and dwc) climates is that the subarctic climate is
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The major difference between tundra (ET) and subarctic (DFC and DWC) climates is that the subarctic climate is relatively warmer, drier, and supports more vegetation. While tundra is characterized by permanently frozen soils, frigid temperatures, and limited vegetation, subarctic climates have moderately cold winters, short cool summers, and greater amounts of precipitation.
This climate supports the growth of hardy plants and trees, such as conifers, that can withstand long, cold winters. The subarctic climate is also home to numerous animal species adapted to the cold, such as caribou, muskoxen, wolves, and bears.The subarctic climate's milder temperatures and greater precipitation are due to its location closer to the equator and the influence of maritime air masses.
In contrast, the tundra is found at high latitudes, where solar radiation is low, and cold polar air masses dominate. In addition, the subarctic climate is also more variable than the tundra. While both are characterized by extreme cold, the subarctic climate can experience periods of warmer weather, while the tundra remains frigid year-round.
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most of africa’s political boundaries were originally drawn by
Answers
Answer:
Europeans
Explanation:
As they colonized most of Africa most of the 1800s - 1900s
The world's largest expanse of middle latitude dry climates is on the continent of ________. 22) A ) Africa B ) Asia C ) North America D ) Australia E ) Europe
Answers
The world's largest expanse of middle latitude dry climates is on the continent of Asia. The correct option is B.
The region in question is known as the "Eurasian Steppe," which stretches from Hungary in Europe to Manchuria in China. This vast area is characterized by a semi-arid to arid climate, with low precipitation and high evaporation rates.
The vegetation is dominated by grasses and shrubs adapted to the dry conditions, and the region is home to a variety of grazing animals such as horses, sheep, and goats. The Eurasian Steppe has played an important role in the history and culture of the regions it encompasses, serving as a corridor for migration and trade and influencing the development of nomadic societies.
The correct option is B.
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Typically, water vapor occupies about what percentage of the air's volume near the earth's surface?a. about 90%b. about 78%c. about 21%d. close to 10%e. less than 4%
Answers
The answer is b. about 78%. Water vapor is a significant component of the atmosphere, but it varies depending on the location, temperature, and weather conditions.
It is an important greenhouse gas that contributes to the warming of the planet. The majority of the air's volume is composed of nitrogen (about 78%) and oxygen (about 21%), with trace amounts of other gases like argon and carbon dioxide. The amount of water vapor that the atmosphere can hold increases as the temperature rises, which can lead to more extreme weather events such as floods and droughts. Monitoring the levels of water vapor in the atmosphere is crucial for understanding climate change and predicting future weather patterns.
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H. W2 break even analysis milled tooth bit drilled 2,461 ft of limestone in 150 rotating hours. Other relevant data for this bit is: Trip time (T) = 8 hrs,Bit cost (B) = $3,000, Rig cost = 900 $/hr It is proposed to replace this bit with an insert-type bit costing 8,500. Calculate the rotating time required of the new bit at breakeven cost for equal penetration rates
Answers
The rotating time required for the new insert-type bit to reach the breakeven cost for equal penetration rates is 143.89 hours.
To calculate the rotating time required for the new bit at breakeven cost for equal penetration rates, we can use the concept of break-even analysis. Break-even analysis determines the point at which the cost of two alternatives is equal.
1. Calculate the cost of drilling with the milled tooth bit:
Cost of drilling with the milled tooth bit = Trip time cost + Rotating time cost
Trip time cost = Trip time (T) x Rig cost per hour
= 8 hrs x $900/hr
= $7,200
Rotating time cost = Rotating time x Rig cost per hour
= 150 hrs x $900/hr
= $135,000
Total cost of drilling with the milled tooth bit = Trip time cost + Rotating time cost + Bit cost
= $7,200 + $135,000 + $3,000
= $145,200
2. Set up the equation for the break-even point:
Cost of drilling with the milled tooth bit = Cost of drilling with the insert-type bit
$145,200 = Trip time cost + Rotating time x Rig cost per hour + Cost of the insert-type bit
= $7,200 + (Rotating time x $900) + $8,500
3. Rearrange the equation to solve for the rotating time:
Rotating time x $900 = $145,200 - $7,200 - $8,500
Rotating time x $900 = $129,500
Rotating time = $129,500 / $900
= 143.89 hours
Therefore, the rotating time required for the new insert-type bit to reach the breakeven cost for equal penetration rates is approximately 143.89 hours.
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A plane leaves Charlottetown, PEI at 12:00pm on Saturday, May 2nd. The destination is Yellowknife, NWT. The flight takes 17 hours. What is the date and time of your arrival in Yellowknife?
Answers
Answer: 5am on Sunday, May 3rd.
Explanation:
Plane left at 12pm and takes 17 hours.
Add 12 and 17:
= 12 + 17
= 29
There are 24 hours in a day. The number of hours into the next day is therefore:
= 29 - 24
= 5 hours
If the plan arrives 5 hours into the next day, that would mean that it arrived at 5am. Date of the next day is May 3rd, a Sunday.
In stellar equilibrium, what is the inward force that is opposite of the outward force of fusion energy?
a. electromagnetic force pulling in
b. it's own gravity pulling in
c. strong nuclear force pulling in
d. none of the above
Answers
Answer:
it's own gravity pulling in
Explanation:
just took the test.
If the lengths of the sides of two similar triangles are in the ratio
5:1, find the ratio ofthe lengths ofa pair ofcorresponding altitudes,
in the order given.
Answers
The ratio of the lengths of a pair of.corresponding altitudes will be 5:1.
How to illustrate the informationRatio in Mathematics simply demonstrates how many times one number can be able to fit into another number. It should be noted that ratios contrast two numbers by dividing them. In this case, A/B will be the formula if one is comparing one variable (A) to another variable (B).
In this case, since the lengths of the sides of two similar triangles are in the ratio 5:1, the ratio of the lengths of a pair of corresponding altitudes will be 5:1 as they are identical.
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Why is the Juan de Fuca Plate important to British Columbia
Answers
Answer: Plate tectonics have shaped the continents for millions
of years. In British Columbia, they have created
the mountains, and are the source of
frequent earthquakes along the coast
The image shows two different islands and the relative distance to the nearest mainland. Based on the theory of island biogeography, which of the following best predicts the effect of the introduction of an invasive species on Easter Island compared to Madagascar?answer choicesThe native species on Easter Island are more likely to survive because the island is further from the mainland.The native species on Easter Island are more likely to survive because the island is so small that there will be limited space for an invasive species to colonize.The native species on Madagascar are more likely to survive because the island is larger and provides a greater diversity of habitats and resources.The native species on Madagascar are more likely to survive because the temperature in the Indian Ocean is warmer than that of the Pacific Ocean.
Answers
Based on the theory of island biogeography, Madagascar is a larger island with a wider variety of habitats and resources, native species there have a higher chance of surviving.
What is explained by the island biogeography theory?According to the island biogeography theory, an island's size and degree of isolation have an impact on its biodiversity and species composition. There are more species on larger, less isolated islands than there are on smaller, more isolated islands. The equilibrium model of island biogeography, which forms the basis of the theory, predicts that an island's species diversity is positively correlated with its size but negatively correlated with its distance from the mainland. It consists of mountain ranges, a lake encircled by a desert, a small area of forest, or even a national park. The hypothesis offers a framework for explaining the diversity and singularity of species, both plant and animal, that can be found in a remote place.
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mention three important man made elements of environment
Answers
Answer:
Constituents of Environment
# Physical elements constitute space, landforms, water-bodies, climate, soils, rocks, and minerals. ...
# Biological elements include plants, animals, micro-organisms, and man.
# Cultural elements include economic, social and political conditions which are largely man-made features.
Explanation:
Brainliest please
recusos forestales a nivel mundial
Answers
I need the answer for geologic history of earth dating rocks
Answers
"In order to understand geologic processes, we need to envision time periods far greater than the hourly, daily, and yearly progression that dominates our everyday lives."
To estab-lish the age of a rock or a fossil, resea-rchers use some ty-pe of clock to deter-mine the date it was formed. Geologists com-monly use radio-metric dating methods, based on the natural radio-active decay of certain ele-ments such as potassium & carbon, as reli-able clocks to date ancient ev-ents. The num-erical ages of rocks in the Geo-logic Time Scale are deter-mined by radio-metric dating.
The Earth's rocks pro-vide clues that al-low scientists to piece toget-her the planet's 4.5-billion-year his-tory.
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Helpp I need to figure it somthing
Answers
if you need an explanation ill give one, just comment
The Grande Ronde Aquifer is the main source of drinking water for the Palouse region which includes cities of Moscow, Idaho and Pullman, WA. Assume that as long as you are an established resident within the Palouse region, you can did a well to tap the groundwater. All non-residents of Palouse region are not allowed to tap into the groundwater reservoir. Furthermore, assume that there is no regulator of the groundwater stock in the region. Given this scenario, is the equilibrium drinking water consumed by all households in the region "too much" or "too little" or equal to the social optimum? Explain why this occurs. Support your answer by drawing the private and social marginal cost curves and the marginal benefit curve for drinking water. Identify the deadweight loss area if any exists.
Answers
In the given scenario, the equilibrium drinking water consumed by all households in the Palouse region is likely to be "too much" compared to the social optimum.
To understand why, we can analyze the situation using the concepts of marginal cost and marginal benefit. In a competitive market without regulation, each household will consume water until the marginal benefit of consuming an additional unit equals the private marginal cost.
However, the private marginal cost curve represents the cost to an individual household of extracting and consuming water from their own well. It does not account for the negative externalities imposed on other users of the aquifer or the long-term sustainability of the water resource.
On the other hand, the social marginal cost curve would include the costs associated with excessive groundwater extraction, such as depletion of the aquifer, reduced water availability for future generations, and potential environmental impacts. The social marginal cost curve is likely to be higher than the private marginal cost curve.
The marginal benefit curve represents the value that households derive from consuming additional units of drinking water. It reflects the willingness to pay for water based on individual preferences and utility.
In the absence of regulation and considering only private costs and benefits, households will continue to consume water until the private marginal cost equals the marginal benefit. However, this equilibrium point does not account for the external costs imposed on society due to excessive groundwater extraction.
As a result, the equilibrium level of water consumption will be "too much" compared to the social optimum. There will be a deadweight loss area, representing the welfare loss due to overconsumption and the failure to consider the long-term sustainability and societal costs associated with groundwater depletion.
To visually represent this situation, a graph can be drawn with the quantity of water consumed on the x-axis and the cost and benefit on the y-axis. The private marginal cost curve would be below the social marginal cost curve, and the marginal benefit curve would intersect both of them. The deadweight loss area would be the triangular area between the private and social marginal cost curves and above the marginal benefit curve.
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Description In order to support the demand for transportation in Miami- Dade County, do you think that the County should expand Metrorail or bus network/system? Why?
Answers
In Miami-Dade County, the expansion of the Metrorail or bus network/system would help to support the demand for transportation.
While there are pros and cons to both options, the decision ultimately depends on a variety of factors including cost, accessibility, and environmental impact. Expanding the Metrorail system would offer a fast and efficient way for residents to get around the county. However, it is also expensive and would require a significant investment of resources.
On the other hand, expanding the bus network would be less expensive and could offer greater accessibility to different parts of the county. However, it would be slower and less efficient than the Metrorail. In the end, the decision will depend on the priorities of the County and the needs of its residents. It may be necessary to consider a combination of both options to meet the needs of different communities and provide the most effective and sustainable transportation system possible.
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What is the term for the layers of porous material through which groundwater moves and is stored?
recharge areas
springs
aquifers
watersheds.
Answers
The term for the layers of porous material through which groundwater moves and is stored is "aquifers."
Aquifers are underground layers or formations of permeable (porous) rock, sediment, or soil that can hold and transmit groundwater. These layers act as natural reservoirs, storing and allowing the movement of water through interconnected pore spaces. As precipitation infiltrates the ground, it percolates through the layers of porous material, replenishing the groundwater and forming recharge areas.
Springs can occur where the water table intersects the ground surface, leading to the emergence of groundwater. Watersheds, on the other hand, refer to the entire area drained by a river or a system of rivers. Aquifers play a vital role in storing and supplying groundwater, serving as important sources of water for wells, springs, and other water supply systems.
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During the Vedic Age, a specialized class called. Power because they could read. The texts were called. Which formed the basis of their social and political system. Alexander the Great's army invaded Eventually, Alexander the Great was. Withdraw. Gained. In 326 BCE. And was forced to
Answers
Main answer: During the Vedic Age, a specialized class called Brahmins held power because they could read the religious texts called Vedas, which formed the basis of the social and political system. Alexander the Great's army invaded India in 326 BCE, but eventually, Alexander was forced to withdraw.
The Vedic Age is a period in ancient Indian history that began around 1500 BCE and lasted until around 500 BCE. During this time, a social and political system emerged that was based on the religious texts known as the Vedas. The Vedas were composed in Sanskrit and were considered sacred by the people of the time. The Brahmins were a specialized class who were responsible for studying and interpreting the Vedas. Because of their knowledge of the texts, they held significant power and influence over society.
In 326 BCE, Alexander the Great led his army into India and encountered resistance from local rulers, including King Porus. After a series of battles, Alexander's troops became tired and homesick, and he was eventually forced to withdraw. While Alexander did not conquer India, his campaign had an impact on the region by introducing Greek culture and ideas.
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Give an example of human geography from the United States or Canada
Answers
Answer:
Examples of human geography from the United States or Canada
1. the presence of the largest and oldest megalopolises on the globe (Boswash, Great Lakes Megalopolis, Californian Megalopolis).
2. the largest urban agglomerations: New York City and Los Angeles.
3. the most populated regions in the United States (Atlantic coast: 4000 inhabitants/km²)
4. the population is a mixture of races and peoples, unique civilizations on the globe.
An ancient fossilized fish has been found in a layer of rock. What is most likely true for the layer of rock?
A. It consists of sedimentary rock.
B. It consists of igneous rock.
C. It formed in a glacier.
D. It formed a few years ago.
Answers
Answer:
b;it consists of sedimentary rock
What is one-way water moves through the nonliving parts of an ecosystem
during the water cycle?
Answers
How did the earth obtain the heat in its interior?
Answers
The Earth's interior heat is thought to have been generated by a combination of processes such as the decay of radioactive elements, gravitational energy from acceleration, frictional heating, impact heating, and tidal heating.
Decay of radioactive elements: The Earth contains a large number of radioactive elements such as uranium, thorium, and potassium, which release heat as they decay into more stable elements. This process generates heat through the emission of alpha, beta, and gamma particles. Gravitational energy from accretion: As the Earth formed from the accumulation of smaller bodies, the gravitational energy from this accretion process was converted into heat. This process is known as accretionary heating and occurs during the formation of planetary bodies.Frictional heating: As the Earth's core and mantle moved and convected, the friction generated heat. This process is known as tectonic heating. Plate tectonics and the movement of the Earth's lithosphere, generate friction which produces heat.Impact heating: The Earth was also heated by the impact of large bodies such as comets and asteroids, which released a significant amount of energy upon impact. This process is known as impact heating, it occurs when a celestial body strikes the Earth's surface with enough force to generate heat.Tidal heating: The heat is also produced by the friction generated by the gravitational pull of the moon and the sun on the Earth's surface, which causes the tides. This process is known as tidal heating, it occurs when the gravitational pull of celestial bodies causes friction between the surface of a planet and its interior, generating heat.
All these factors contributed to the Earth's interior heat, which continues to be generated today and drive the processes such as plate tectonics, volcanic activity, and geothermal activity that shape our planet. The heat from the interior of the Earth is also responsible for the Earth's magnetic field, it is generated by the motion of molten iron in the Earth's core.
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what are the deposits brought by flowing water known as
Answers
Answer:
As you possibly already know, the Earth's surface is constantly eroded by flowing water. But, there is more to it! After rivers erode rock and soil, they deposit (drop) their load downstream. This process is known as deposition.
Explanation:
What are Africa’s BIG FIVE animals?
Answers
Answer:
lion, leopard, rhino, elephant and African buffalo.
These five large African mammal species were known to be dangerous and it was considered a feat by trophy hunters to bring them home.
Answer:
Hey there!
The BIG FIVE animals are the: Elephant, Rhino, Lion, Leopard, Cape Buffalo.
Let me know if this helps :)
new research based on footprints found in the us southwest suggests humans may have been in north america before 21,000 years ago. 21,000 years ago was the radiocarbon date of organic material in the layer above the footprints. therefore, this layer functioned as a:
Answers
New research based on footprints found in the US Southwest suggests humans may have been in North America before 21,000 years ago. 21,000 years ago was the radiocarbon date of organic material in the layer above the footprints. Therefore, this layer functioned as a stratigraphic boundary.
Stratigraphic boundary refers to the boundary between two layers of rocks or sediments where no new material is added or lost. This means that the boundary represents a time break in the geological record. When a stratigraphic boundary has been identified, geologists can use it to correlate rocks and sedimentary layers across regions or even continents. Stratigraphic boundaries also provide important evidence for reconstructing the Earth's past environment and life forms.
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What dangers lied on the silk road
Answers
Answer:
Virus's,
there would be stealing too
Explanation: The silk road was one of the largest roads built for trading across countries and as they traded the virus's were spreading there was also I really bad type of virus's but I forgot the name. I think you should research about it to get more points and i think this is history related not geography. Enjoy.
the more humid the atmosphere, the ______ is the base of a cumulonimbus (thunderstorm) cloud.
Answers
The more humid the atmosphere, the lower is the base of a cumulonimbus (thunderstorm) cloud.
Cumulonimbus clouds are formed due to the process of convection, which is driven by the sun's heat causing the earth's surface to warm the air above it. As this warm air rises, it cools and the moisture in the air condenses into water droplets or ice crystals, forming a cloud.
In a humid environment, there is a higher amount of water vapor present in the air. This means that the air can become saturated at a lower altitude, causing the cloud base to be lower. In drier conditions, the air needs to rise higher and cool more before reaching the point of saturation, leading to a higher cloud base.
The height of the cloud base is important because it influences the intensity and duration of thunderstorms. Lower cloud bases can lead to more frequent and heavier rainfall, as the distance between the cloud and the ground is shorter, allowing for faster precipitation.
Additionally, lower cloud bases are often associated with higher instability in the atmosphere, which can result in stronger updrafts and more severe thunderstorms. Understanding the relationship between humidity and the base of cumulonimbus clouds helps meteorologists predict and track severe weather events.
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1. Which of these was NOT a reason for
the rapid spread of AIDS in Africa?
O a lack of funds
O no one knew it was there
Otheir shame associated with it
O governments resisted medical help
to the Ilnited Nations,
Answers
Answer:
The bottom
Explanation:
Sketch a simple diagram that explains the idea of half-life
Sketch and label four simple diagrams that illustrate each of the following: superposition, original horizontality, lateral continuity, and cross-cutting relationships
Answers
Superposition is where sedimentary layers are put one on top of the other over time. The deeper the layer, the older it is.
A quantum system's capacity to exist in several states concurrently up until measurement is made is known as superposition. Since the concept is difficult to comprehend, this fundamental quantum mechanics principle is typically explained using an experiment carried out in 1801 by the English scientist Thomas Young.
A cornerstone of quantum mechanics is the concept of quantum superposition. Things like location or momentum are constantly well-defined in classical mechanics. Even though we might not always be aware of what they are, this is a problem with our comprehension rather than with the physical system.
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Two object have orbits around the Sun with the same semi-major axis but very different eccentricities, as pictured below. Which orbit has the longest period??
the two orbits have the same period
Answers
Two object have orbits around the Sun with the same semi-major axis but very different eccentricities. According to the conditions, the two orbits have the same period which has the longest period.
What is eccentricities?The term "eccentricity" is defined in terms of the fixed-point known as focus and the fixed-line known as the directrix in the plane.
Eccentricity is a measurement of the extent to which the curve deviates from the specified shape's circularity.
We are aware that the term "conic section" refers to the section formed when a plane intersects a cone.
Therefore, two object have orbits around the Sun with the same semi-major axis but very different eccentricities. According to the conditions, the two orbits have the same period which has the longest period.
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