Based on the descriptions of the significant African Homo erectus skeletal remains, you can match them to the locations where they were found as follows:
i: A partial skull whose gracile nature demonstrates the large degree of variation in the species - Ileret
ii: A juvenile male and one of the most complete early hominin skeletons ever discovered - Nariokotome
iii: A cranium that has evidence of cut marks made by stone tools, a possible sign of ritual activity - Bodo
iv: A very robust cranium and post crania from the Middle Awash Valley - Daka
v: A partial cranium dating to 1 MYA - Buia
vi: A nearly complete pelvis - Gona
African Homo erectus, also known as Homo ergaster, is an extinct hominin species that lived in Africa from about 2 million to 300,000 years ago. Several important Homo erectus skeletal remains have been discovered in Africa, providing valuable information about the morphology and behavior of this species.
One of the most significant Homo erectus finds in Africa is the nearly complete skeleton of a young male individual known as the "Turkana Boy," which was discovered at the Nariokotome site near Lake Turkana in Kenya. This skeleton is estimated to be about 1.5 million years old and is one of the most complete early human skeletons ever found. The Turkana Boy is believed to have been about 8 years old at the time of his death and stood about 1.6 meters tall, with a long, slender body and long arms and legs. The skeleton shows that Homo erectus had a body form that was well adapted for long-distance walking and running.
Another important Homo erectus discovery is the skull of an adult female individual known as the "Daka skull," which was found at the Daka site in southern Ethiopia. The Daka skull is estimated to be about 1.4 million years old and shows that Homo erectus had a larger brain than earlier hominin species, such as Australopithecus. The Daka skull also shows that Homo erectus had a more vertical forehead and smaller brow ridges than earlier hominin species.
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What is the difference between Internal and External Respiration?
External respiration is between the respiratory membrane and the lungs
External is between the intrapleural space and the alveoli for gas exchange
Internal respiration is between the pleura and the lungs as they expand with air
Internal respiration is between the tissues and blood on a cellular level
2. Which respiratory volume is not included in determining a patient's vital capacity?
Inspiratory reserve volume
Expiratory reserve volume
Tidal volume
Residual volume
The difference between Internal and External Respiration is as follows; Internal respiration is between the tissues and blood on a cellular level (option D).
What is external and internal respiration?Internal respiration is a biological process that occurs in two separate phases.
The first involves the exchange of gasses between the bloodstream and the tissues while the second involves the when cells utilize oxygen to perform basic metabolic functions in a process called cellular respiration.
Therefore, option D is the correct answer.
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anthropologist matt cartmill proposed that the evolution of stereoscopic vision and grasping fingers in the early primates enabled exploitation of a food source plentiful within the eocene forests. this is called the hypothesis.
The arboreal hypothesis.
What is explained by the arboreal hypothesis of primate origins?According to the arboreal theory, monkeys diverged from their forebears by adjusting to living in trees. Grafton Elliot Smith, a neuroanatomist who was primarily interested in the development of the primate brain, made the suggestion in 1912. According to the arboreal hypothesis, monkeys developed by becoming adapted to live in trees. According to this theory, the primates also evolved limbs and hands that aided in grasping. To move among the woods, they also relied on sight rather than smell. Dwelling in trees required the use of hands and feet for grasping, and obtaining small prey played a more significant role in primate evolution than living in trees.
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A group of biology students test the growth of bacteria under different conditions. the students apply the same amount of bacteria to identical petri dishes enriched with nutrients, then place each plate at a different temperature. the bacteria are allowed to grow for three days after which the number of bacterial colonies on each plate is counted. what is the dependent variable in this experiment?
I will leave your question unanswered. Thanks for the points I stole from you!
deja lo checo y te ayudo
Explanation:
después te ayudo
Which of the following statements regarding plant speciation is correct?
Animals adapt to their surroundings to improve reproduction rates.
Animals adapt to their surroundings to improve survival rates.
Animals adapt to their surroundings to reduce reproduction rates.
Animals adapt to their surroundings to reduce survival rates.
Answer:
The answer is Animals adapt to their surroundings to improve survival rates.
Explanation:
This is because even if they increased reproduction rates it wouldn't matter if they are dying.
Answer:
Animals adapt to their surroundings to improve survival rates.
Explanation:
pemphigus causes blisters because the skin cells cannot firmly attach to each other. pemphigus is an autoimmune disease that produces antibodies against which strength-producing transmembrane protein?
This kind is associated with desmoglein 3 IgG antibodies, either by themselves or in combination to antidesmoglein 1 antibodies. The production of autoantibodies that selectively target keratinocyte proteins causes pemphigus vulgaris (PV), an autoimmune skin disease.
Pemphigus vulgaris results from a malfunction in the immune system, the body's line of defence against infection. Whenever the immune system isn't functioning properly, it accidentally attacks the skin rather than germs. Blisters form as a result, and the skin is damaged. D-penicillamine use is usually associated with the drug-induced illnesses pemphigus vulgaris and pemphigus foliaceus.This kind is associated with desmoglein 3 IgG antibodies, either by themselves or in combination to antidesmoglein 1 antibodies. The production of autoantibodies that selectively target keratinocyte proteins causes pemphigus vulgaris (PV), an autoimmune skin disease.
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1. Discuss the importance of each of the following edaphic (soil) factors to living organisms. Water, Air, Mineral nutrients
The edaphic factor includes a range of proprieties of the soil, physical, chemical, and biological that are result from biological and geological phenomena. In the case of living organisms, we have those chemical and physical properties, such as minerals and water, as well as soil aeration influence ecology and evolution of plants and in consequence, associated biota, this is because plants are the base of the food chain as well as pioneers in many cases of ecosystem structure.
Following this line of thought, we have that soil is very important, factors as simple as the consistency, very different sand from mud, impact texture and chemical composition, and in consequence the type of organisms that can settle there, we can see that in deserts (sandy soil, limited water, good nutrients), the type of plants that grow have certain characteristics, for example, they live with very few water, and in turn, they provide refuge and food for other animals in the desert, on the other hand, we have places like confers forests, where the soil is rich and water is available in the subsoil, also tend to be mountainous sites, those plants are adapted to other conditions, their roots retain soil preventing erosion, also the kind of animals that depend on them are different.
What is the probability of getting the same numbers on 3 dice when they are thrown simultaneously?
Answer:
So, assuming the dice are 'fair' (that each of the six numbers has a probability of 1/6 of showing up on each of the dice), there is a probability of 1/36 that all three dice will show the same number.
Explanation:
The image below shows the results of a study on the types of animals found along a stretch of stream near to a factory.
Which animal will live in the most polluted water?
A : Shrimp
B : Sludge worm
C : Leech
D : Snail
Shrimp have a high tolerance for poisons and pollutants, therefore they can even live in slightly contaminated water because they eat all the unclean things like dead plants, algae, and worms. Thus option A is correct.
What is pollution?Pollution is defined as the spread of toxins into the environment that have a negative impact.
It can also be defined as the presence of any substance that endangers the health of people, animals, and plant life in air, water, soil, or food.
Some of the causes and effects of pollution are:
Sulfur dioxide and other hazardous gas emissions contribute to acid rain, global warming, and other factors that make it difficult for animals to thrive. These factors include rising temperatures, unpredictable rain patterns, and droughts. Every contaminant in the air that we breathe in. Asthma and lung cancer are on the rise as a result.Thus, Shrimp have a high tolerance for poisons and pollutants, therefore they can even live in slightly contaminated water because they eat all the unclean things like dead plants, algae, and worms. Thus option A is correct.
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What do scientists call the differences in the traits of a particular species?
A. adaptation
B. variation
C. fossilization
D. selection
Answer:d
Explanation:
Who is the ceo of apple
Answer:
Tim Cook used to be Steve Jobs
Explanation:
(If you mean the tech company Apple)
Wha is contained in chromosomes
Answer:
genes
Explanation:
chromosomes contain genes
A clear sign that a subduction zone occurs in the ocean is the existence of a ______________________. *
Answer:
Where two tectonic plates converge, if one or both of the plates is oceanic lithosphere, a subduction zone will form. An oceanic plate will sink back into the mantle. Remember, oceanic plates are formed from mantle material at midocean ridges.
In an isolated population of 10,000 rabbits, 900 are homozygous for a recessive mutant Sp1 allele. Assuming the population is in Hardy-Weinberg equilibrium, what is the percentage of rabbits in the population that would be heterozygous for the mutant Sp1 allele
42% of rabbits in the population are heterozygous for the mutant Sp1 allele
Hardy-Weinberg equilibrium
Assume that p is the frequency of the dominant allelep² is the frequency of the organisms with homozygous dominant genotypeAssume that q is the frequency of the recessive alleleq² is the frequency of the organisms with homozygous recessive genotype2pq is the frequency of the organisms with heterozygous genotypep+q = 1According to the question, 900 out of 10000 rabbits are homozygous recessive
This implies that q² = 900/10000= 9/100= 0.09So, q = 0.3The frequency of the recessive allele is 0.3p = 1-q = 1-0.3= 0.7For organisms with heterogenous genotype, their frequency is 2pq
2pq= 2 x 0.3 x 0.7 = 0.42
In terms of percentage, 0.42x 100% = 42%
Therefore, 42% of rabbits in the population are heterozygous for the mutant Sp1 allele.
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__________________________ a. A laboratory in a major university surveys all the reactions involving bromine. __________________________ b. A pharmaceutical company explores a disease in order to produce a better medicine. __________________________ c. A scientist investigates the cause of the ozone hole to find a way to stop the loss of the ozone layer. __________________________ d. A pharmaceutical company discovers a more efficient method of producing a drug. __________________________ e. A chemical company develops a new biodegradable plastic. __________________________ f. A laboratory explores the use of ozone to inactivate bacteria in a drinkingwater system.
Basic research generates basic knowledge. Applied research solves practical problems. Technological development provides tools and artifacts for research. A: basic research. B, C, F: applied knowdelge. B, D, E: technological development.
----------------------------------------
Let us first review some framework.
Basic research is directed to understand fundamental problems or issues. It is about generating basic knowledge. It constitutes the theoretical basis of knowledge on which applied science or technology is based.Applied research makes use of the knowledge generated by basic science to solve practical problems. It generates knowledge that has practical use.
Technological development is one of the main tools of science. Its main function is to create useful tools and artifacts to facilitate the scientist's work.
Now let us classify each item.
a. A laboratory in a major university surveys all the reactions involving bromine. BASIC RESEARCH
b. A pharmaceutical company explores a disease in order to produce a better medicine. APPLIED RESEARCH and TECHNOLOGICAL DEVELOPMENT
c. A scientist investigates the cause of the ozone hole to find a way to stop the loss of the ozone layer. APPLIED RESEARCH
d. A pharmaceutical company discovers a more efficient method of producing a drug. TECHNOLOGICAL DEVELOPMENT
e. A chemical company develops a new biodegradable plastic. TECHNOLOGICAL DEVELOPMENT
f. A laboratory explores the use of ozone to inactivate bacteria in a drinkingwater system. APPLIED RESEARCH
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Which taxonomic level has the closest relation? *
O Family
O Phylum
O Class
O Order
Which of the following explains why animals need more food when it is cold?
winter
Explanation:
because during winter animal are few
Describe protons.
Location:
Charge:
Mass:
what is necessary in order for skin and muscles to be fossilized?
The fossilization of skin and muscles is a relatively rare occurrence in the fossil record.
In order for these soft tissues to be preserved as fossils, specific conditions need to be met. Generally, the following factors are necessary:
Rapid burial: The organism's body needs to be rapidly buried in sediment shortly after death. This prevents or delays decomposition and protects the soft tissues from scavengers and decay-causing agents.
Anaerobic environment: An oxygen-free (anaerobic) environment is crucial for preserving soft tissues. Lack of oxygen slows down decomposition and reduces the activity of bacteria and other organisms that would break down the tissues.
Mineralization: The tissues undergo a process called mineralization, where minerals, particularly calcium carbonate or silica, gradually replace the original organic material. This preserves the structure and shape of the soft tissues at a microscopic level.
Geological processes: Over time, geological processes such as compaction and lithification occur, turning the sediment into solid rock. This helps protect and preserve the fossilized soft tissues.
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Label the parts of the river below using the word bank provided
The three parts of a river are the upper course, the middle course, and the lower course, and a diagram showing these parts are found in the attachment.
What are the parts of a river?The parts of a river are divided into three:
upper course,middle course,andlower courseThe upper course is the one that is closest to the river's source. The river has a strong gradient and fast-flowing water, while the land is often high and rugged. It features rapids, waterfalls, gorges, interconnecting spurs, and steep-sided V-shaped valleys, and steep sides.
The components of a river's middle course include meanders, lakes, and larger, shallower valleys.
Finally, in the lower course of a river, there are large valleys with flat bottoms, floodplains, and deltas
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What is the largest reservoir
for carbon?
A. marine environments
B. atmosphere
C. producers
Answer:
A. marine environments
Explanation:
so, a. is just the correct answer. largest reservoir for carbon is just marine environments! yay
i hope this helped you, have a grand day
which of the following statements is correct? multiple choice all plants maintain a mycorrhizal relationship. most plants maintain a mycorrhizal relationship. some plants maintain a mycorrhizal relationship. only a few plants maintain a mycorrhizal relationship.
The correct statement is most plants maintain a mycorrhizal relationship.
The correct option is B.
In general , majority of plants maintain a mycorrhizal relationship. However, there are some plants that do not form mycorrhizae, such as members of the Brassicaceae family (mostly having mustard and cabbage), as well as some orchid species that have evolved alternative strategies for nutrient acquisition.
Also, Mycorrhizae are symbiotic associations between plant roots and fungi, where the fungus provides the plant with nutrients and the plant provides the fungus with carbohydrates.
Hence , B is the correct option
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When the number of enzymes needed to break down a drug in the liver increases, it is called:_______
When the number of enzymes needed to break down a drug in the live increases , its is called as Cytochrome P-450 enzymes. It is a group of enzymes that helps in to breakdown to drug via primary mechanism for metabolizing .
Drug metabolism are the breakdown by living organism .and they divided into three phases , first is cytocromes p450 oxidases which react into xenobiotic . second phase is where compounds conjugated to polar compounds. in last phase conjugated xenobiotics processed and converted into lipophilic compounds.
Some drug such as rifampin, work as a inducers they increase the P-450 enzymes level in the liver.
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A woman with a head injury has lost the ability to wiggle her toes. Describe how the area of the brain used for toe wiggling might be found using a CT scan.
1. In the first minute of her talk, Earle lists several ways the oceans have changed in the past 50 years because of human impact.
2. What are some of these ways? Earle says, “No blue, no green.” Explain what she means by this.
3. What effect are trawlers having on our oceans?
4. What are National Marine Sanctuaries? Briefly describe them and why we need more than just these sanctuaries.
5. What is Earle’s wish? What is needed to accomplish this?
1. She makes the statement that more than 90% of the large fish in the ocean have been caught and eaten.
2. We cannot have the green land without the ocean and other blue water sources. Earle likens a dry Earth to Mars. Without the ocean, there would be no life on Earth.
3. By effectively rototilling the bottom, trawling disrupts the natural environment of the seafloor.
4. National marine sanctuaries are unique locations that guard critical marine ecosystems across the country.
5. "I wish you would ignite public support for a global network of marine protected areas by using all available tools, including films, expeditions, the Web, new submarines, and a campaign:
What is “No blue, no green"?that the coral reefs are deteriorating and going extinct, nearly half of them. She also talks about how the loss of oxygen is killing off the ecosystem and fauna.
All of the creatures and plants that live at the bottom are harmed, if not completely destroyed, by the disruption of animal burrows and root systems.
Many sanctuaries are home to ancient shipwrecks and other archaeological treasures. Some sanctuaries serve as the breeding and feeding sites for endangered whales.
No water means no life. No blue, no green," declared Dr. Sylvia Earle, a renowned oceanographer, deep sea explorer, and field researcher. Without safeguarding the water and life that cover 71% of the surface of the Earth, we cannot create a more wholesome, sustainable food system.
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A baby is born with phenotypic characteristics of Down’s syndrome ; a rounded face, small chin, almond shaped eyes, and shorter limbs. Evidence from which of these techniques would best confirm the child has an extra chromosome 21
Answer:
shorter limbs would be the best characteristic to confirm
Explanation:
When we exhale does the diaphragm relax and goes down
Answer:
True.
Explanation:
The diaphragm is like a pump; to bring in air, it opens up, pulling air in. To release it, it closes back down, forcing air out.
Answer:
Yes
Explanation:
When we exhale, the diaphragm relaxes and proceeds to return to a normal resting shape. The air is forced out of the lungs causing the diaphragm to go down.
The proteins found in your hair and fingernails would be classified as what type of proteins?
Answer:
yes
Explanation:
creatine like horns of rhinos or finger nails
Answer:
Keratinocytes
Explanation:
Keratinocytes make keratin, a type of protein that's a basic component of hair, skin, and nails. Keratin in the skin's outer layer helps create a protective barrier.
match the kind of selection with its effect on population phenotypes. drag and drop options on the right-hand side and submit. for keyboard navigation...show more press space or enter to grab clusters the population around an intermediate phenotype directional selection press space or enter to grab shifts the average phenotype towards an extreme stabilizing selection press space or enter to grab causes oscillating patterns in the phenotype disruptive selection press space or enter to grab keeps the average phenotype the same while pushing towards more extreme phenotypes
Directional selection shifts the population towards an extreme phenotype, while stabilizing selection keeps the average phenotype the same and disruptive selection causes oscillating patterns in the phenotype.
The kind of selection with its effect on population phenotypes are as follows :
Cluster the population around an intermediate phenotype: stabilizing selection
Shifts the average phenotype towards an extreme: directional selection
Causes oscillating patterns in the phenotype: disruptive selection
Keeps the average phenotype the same while pushing towards more extreme phenotypes: diversifying selection
Type of selection and its effect on population phenotypes:
Stabilizing selection: This is a type of natural selection that operates to maintain the status quo and keep the population around an intermediate phenotype. It selects against individuals with extreme phenotypes and favors those with average or intermediate phenotypes. Stabilizing selection results in a reduction of genetic diversity in the population over time, as the extreme phenotypes are eliminated from the gene pool.
Directional selection: In this type of natural selection, there is a shift in the average phenotype towards an extreme. This occurs when individuals with a particular phenotype are favored over others, causing their frequency in the population to increase. Over time, this can lead to a change in the genetic makeup of the population, as the favored phenotype becomes more common.
Disruptive selection: This type of natural selection favors extreme phenotypes at the expense of intermediate phenotypes. It can lead to the formation of distinct subgroups within a population, with each group exhibiting a different phenotype. Over time, disruptive selection can increase genetic diversity in the population, as the extreme phenotypes become more prevalent.
Diversifying selection: This type of natural selection maintains genetic diversity by selecting for multiple phenotypes within a population. It keeps the average phenotype the same while pushing towards more extreme phenotypes. Diversifying selection can occur when a population is exposed to different environmental conditions or when there are multiple selective pressures acting on the population. This can result in the formation of multiple subgroups within the population, each adapted to a specific environment or selective pressure.
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chromatin is a structure in which dna is tightly packaged, and forms chromatids during the metaphase.
T
F
Chromatin does form the basis of chromosomes, chromatids are not formed during metaphase, but rather during DNA replication in the S phase of the cell cycle. So, the statement is FALSE.
Chromatin is a complex of DNA and protein found in the nucleus of eukaryotic cells, which serves to package DNA into a more compact and organized structure.
Chromatin can exist in different levels of condensation, ranging from loosely packed euchromatin to highly condensed heterochromatin.
During cell division, chromatin undergoes further condensation to form tightly packed structures called chromosomes.
However, chromatids are not formed during metaphase, but rather during the S phase of the cell cycle, when DNA replication occurs.
Each chromosome is made up of two identical sister chromatids, which are held together by a structure called the centromere.
During metaphase, the chromosomes align at the center of the cell, and the spindle fibers attach to the centromeres to pull the sister chromatids apart to opposite poles of the cell.
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what trait is found in early embyros of both birds and humans
Answer: tail I'm not sure
Answer:
The answer is tail
Explanation:
I hope it helps you.