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Following the prey-predator cycle, from 2000 to 2004, in the absence of wolves, the elk population exponentially increased, exceeding its carrying capacity. From 2004 to 2007 the elk population decreased, and from 2008 to 2010 the elk population size remained the same at its carrying capacity point.
What are predator-prey cycles?
The predator-prey cycle was proposed by Lotka-Volterra following community dynamics. It refers to the interaction of two species and how their population sizes change when one species feeds on another species.
The model states that,
1) when the prey population size increases, the predator population size increases too because they have more food.
2) Since there are more predators, the number of available prey decreases.
3) Because the number of prey decreases, there is not enough food for predators, so their population size decreases as well.
4) Since fewer predators are around, the prey population increases its size again.
In the exposed example,
predators: wolves (blue line)prey: elk (red line)As we can see, in 2000, the elk population was too small, bearly reaching 10 individuals.
Wolves' population was larger and kept increasing until the year 2002. At this point, available food was not enough to support that population size, so they started to die or migrate. This fact caused a decrease in the wolve's population size.
Since there were fewer predators, the remaining elks got to mate and reproduce, exponentially increasing their population size again in the absence of their predators.
By 2004, the elk population exceeded their carrying capacity, and the environment could not support this number of individuals. This means there were not enough resources for all the animals to survive (food, water, shelter, etcetera), so the population size decreased again until reaching the species carrying capacity, at about 18 individuals.
Following the prey-predator cycle, from 2000 to 2004, in the absence of wolves, the elk population exponentially increased, exceeding its carrying capacity. From 2004 to 2007 the elk population decreased, and from 2008 to 2010 the elk population size remained the same at its carrying capacity point.
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Related Questions
The table shown below represents the number of species growing in an area that was logged using clear-cutting 45 years ago in Temagami, Ontario. Data was collected periodically over 45 years.
Describe the changes occurring in vegetation type and species diversity over the 45 years.
What does the pattern of change tell you about what is happening in this area?
Explain how the data supports your conclusion.
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According to the information we can infer that in general the number of species has increased.
What conclusion can we draw from the graph?Based on the information in the graph, we can conclude that over the years the number of species has increased. In the case of grasses, it went from having 32 species to having 35. In the case of trees, it went from having 0 to having 24, and in the case of shrubs, it went from having 0 to having 18.
In the row that shows the total number of species, it went from having 32 to having 77, which means that it doubled the number of species in this period of time.
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PLEASE ANSWER!! ITS FOR MY EXAM!!! AND I WILL GIVE BRAINLIEST!!!
Which ocean zone is where the most nutrients are usually found?
A. Pelagic
B. Photic
C. Neretic
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Answer:
A is the answer your welcome!
Before testing the pea plants, Mendel formed a five-part hypothesis. What did Mendel include in his hypothesis? Check all that apply
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Answer:
• A pair of factors (known as genes) control traits.
• One gene comes from each parent for every trait.
• Each trait is passed from generation to generation.
• When gametes are formed, genes separate.
• If there are two unlike genes, one may be seen while the other is hidden.
Explanation:
The things that Mendel would include in his hypothesis will be genes. This is an hereditary unit that is being passed to.a child from their parents. This gene comes from each parent for every trait and is passed down across different generations. These traits passed down to the child can be height, shape, color of the seed etc.
It should be noted that when the reproductive cells are being formed, the genes will be grouped differently and in situations whereby the gender are not thesame, one will be a dominant gene while the other will be a recessive gene.
Answer:
a pair of factors known as genes control traits, one gene comes from each parent for every tree, each trait is passed from generation to generation, when game it's are found genes separate, if there are two unalike jeans one maybe seen while the other is hidden.
Which statement best describes what Tessa should tell the class about the diagram
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Answer:
The dots represent that diffusion has already occurred.
Explanation:
Perfumes are nothing but gases when tesla spray it in a corner of room are given free access a room, their particles blend in with the particles of air. The particles of gas are allowed to move rapidly every direction. They in the end spread through the entire room to a area of low concentration from the high concentration.
Thus, the dots represent that diffusion has already occurred.
Answer:
Diffusion has already occurred.
Explanation:
I took the unit review test!
Palisade mesophyll cells have very large vacuoles.
Explain how water moves from the xylem in the leaf into these vacuoles.
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Answer:
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1-Water is passively transported into the roots and then into the xylem. 2-The forces of cohesion and adhesion cause the water molecules to form a column in the xylem. 3- Water moves from the xylem into the mesophyll cells, evaporates from their surfaces and leaves the plant by diffusion through the stomata.
What are 2 similarities chromosomes you get from parents
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The two similarities between chromosomes that you get from your parents are Genetic Material and Number of Chromosomes.
What more should you know about genetic materials and number of chromosomes you get from parents?In terms of Number of chromosomes: Every Humans have 23 pairs of chromosomes, for a total of 46 chromosomes. Each parent contributes 23 chromosomes to their child, for a total of 46.
in tems of Genetic material: The chromosomes that you get from your parents contain the same genetic material. This is why you look like your parents and why you have inherited some of their traits.
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12. Individuals with Type O blood are able to produce both Anti-A and Anti-B antibodies, while individuals with Type AB blood produce neither of these antibodies. Explain why this is the case. How does this relate to the idea that people with Type AB blood are often referred to as universal recipients for transfusions
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Answer: Blood group O individuals are able to produce Anti- A and Anti- B and are often referred to as UNIVERSAL DONORS, while blood group AB individuals produces none and are often referred to as UNIVERSAL RECIPIENTS
Explanation:
Two antigens, type A and type B, occur on the surfaces of the red blood cells in a large proportion of human beings. These antigens are referred to as agglutinogens because they often cause blood cell agglutination during blood transfusion. Because of the way these antigens are inherited, people may have neither of them on their cells , they may have one or they may have both simultaneously.
When type A antigen and type B antigen is not present in an individuals reb blood cell as seen in blood group O, antibodies known as Anti-A and Anti- B develops in the plasma. This is because small amounts of type A and type B antigens enter the body through food, bacteria and other ways and they initiate the development of anti A and Anti- B antibodies in their plasma.
Furthermore, individuals with blood type AB has antigen A and B on their red blood cells and therefore do not develop antibodies A and B in their plasma. This makes them universal recipient as their blood do not discriminate any ABO blood group during blood transfusion.
"Acidic" is an appropriate description for four of the following. Which one is the exception?
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Answer:
magnesium hydroxide
Explanation:
is the inorganic compound with the chemical formulaMg( OH)2.it is a common component of antacid such as milk of magnesia
All of the following are in example kinetic energy except?
Light energy
Thermal energy
Mechanical energy
Chemical energy
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Answer:
light energy
Explanation:
Answer:
Light energy
Explanation:
2
A student takes two herbicide-resistant weeds and determines that the allele for herbicide resistance is dominant (H). The genotype of each plant is HH and Hh
respectively. In a cross between these two weeds, what percentage of the offspring would be resistant to herbicide?
A) 50%
B) 100%
0%
25%
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Answer:
(B)
Explanation:
Anthropologist recently discovered skull fragments from a previosly unknown primate. the mandible of the skull is shown below with mandibles of other known primates why would scientist use the fossil revords to help them determine the sprcies of uninown primates
Answers
Answer:
I need points but I hope you get the correct answer
Explanation:
:)
Which term describes a protein that prevents an operon from being turned on in a prokaryotic cell?
A.
Enhancer
B.
Repressor
C.
Promoter
D.
Operator
Answers
Answer:
B. Repressor.
Explanation:
Hope this helps!
Answer:
The correct answer is B. Repressor.
In prokaryotic cells, an operon is a cluster of genes that are transcribed together as a single unit. The operon consists of a promoter, an operator, and the genes it controls. The operator is a DNA sequence located between the promoter and the genes.
A repressor protein binds to the operator region and prevents RNA polymerase from binding to the promoter and initiating transcription. By binding to the operator, the repressor blocks the expression of the genes in the operon, effectively turning off their transcription.
Therefore, the term that describes a protein that prevents an operon from being turned on in a prokaryotic cell is B. Repressor.
Hope this helps :]
A bacterial culture is growing exponentially. At 7:00 AM, the number of cells was estimated to be 5.5 X 104 cells. At 11:00 AM, the number of cells increased to 8.7 X 107 cells. What is the generation time in minutes of the bacteria? Please assume we are in the log phase of growth for this bacterial population. Please show your work.
Answers
N = N0 x 2^(t/g)
where:
N0 = initial number of cells
N = final number of cells
t = time elapsed
g = generation time
We can use the information given to solve for g.
At 7:00 AM, N0 = 5.5 x 10^4 cells
At 11:00 AM, N = 8.7 x 10^7 cells
The time elapsed is 4 hours, or 240 minutes.
Substituting these values into the formula, we get:
8.7 x 10^7 = 5.5 x 10^4 x 2^(240/g)
Dividing both sides by 5.5 x 10^4, we get:
1582.7 = 2^(240/g)
Taking the logarithm of both sides (base 2), we get:
log2(1582.7) = 240/g
Solving for g, we get:
g = 240 / log2(1582.7)
Using a calculator, we find that g is approximately 29.3 minutes. Therefore, the generation time of the bacteria is approximately 29.3 minutes.
Which cube has a higher surface-area-to-volume ratio?
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Answer:
bottom right ....................
Answer:
4 cm x 4 cm x 4 cm..... .
Explanation:
...
If thie dna is located in the nucleus of s skin cell the cell
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Answer:DNA replication, transcription, and RNA processing all take place within the nucleus, with only the final stage of gene expression (translation) localized to the cytoplasm.
Explanation:
i hope this is right but if not I’m sorry
The most basic organization level of life is a ____________. A. membrane B. tissue C. cell D. organ
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\(Hello\) \(There!\)
The answer is...
C. Cell.
Hopefully, this helps you!!
\(AnimeVines\)
Please help with 14 please :(
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Answer:
One advantage of producing Antithrombin would be because of it's ability to be produced in large quantities, since goats are very common livestock. This leads to more blood clotting treatment in humans, and has a very positive impact on people affected with those conditions.
Explanation:
(Poor goats)
imagine that you are conducting tests shortly after a nuclear accident.Using potted moss plants as you experimental organisms,design a experiment to test the hypothesis that the frequency of mutations decreases with the organisms distance from the source of radiation
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Answer:
Take two potted plants and provide equal conditions to both.
Explanation:
Two potted plants i.e. one is placed near the nuclear accident site while on the other hand, the other is placed far away from the nuclear accident. Provide equal conditions to both plants so that we can find out the hypothesis that the frequency of mutations decreases with the organisms distance from the source of radiation. The result shows that the potted plant that is located near to the nuclear accident site having high frequency of mutation as compared to other plant due to the radiation present at that location.
As shown in the diagram above, at several locations warm, less dense water cools
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How are all animals like as heterotrophs?
All animals have multiple cells.
All animals are made up of cells organized into tissues.
All animals have two copies of each chromosome.
All animals need food to survive.
Answers
Answer:
All animals need food to survive.
Explanation:
A student wants to illustrate the number of each different bird species that migrates south in winter. Which type of chart/graph would be the most appropriate to use?
a
Pie Chart
b
Bar Graph
c
Line Graph
Answers
Answer:
bar graph
Explanation:
A bar graph
You want to show that there is no connection between one species and another.
The line graph will do exactly the opposite. It will imply that the line joining 2 points gives some connection between one point and the next point.
The Pie chart is usually used to compare one number size with a another, like the total number of Covus 19 by state each state close to the other. It is not a good choice because California (for example) might have the most number of cases of the virus but it also has the largest population. You might use the pie chart by converting it to %s, but what would that give you, and how could you use it.
the scatterplot shows a correlation between height and weight for adults participating in a study. Which graph shows the line of best fit for the data set
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A scatter plot is used to display a correlation between two continuous variables, as shown in the given problem. A line of best fit is a straight line that passes through most of the data points in a scatter plot, indicating the direction and strength of the relationship between the two variables.
In order to determine the line of best fit in a scatter plot, one needs to draw a line that best represents the overall pattern of the data points. To illustrate, one might consider the following three graphs:In the first graph, the line of best fit is relatively flat, indicating a weak correlation between the two variables. This means that weight does not increase or decrease in direct proportion to height, but rather varies more independently.In the second graph, the line of best fit is more diagonal, indicating a stronger correlation between height and weight.
This means that as height increases, weight also tends to increase, although the relationship is not necessarily linear.In the third graph, the line of best fit is steep, indicating a very strong correlation between the two variables. This means that as height increases, weight tends to increase at a faster rate.
The answer to the given question would depend on the slope of the line of best fit in the scatter plot provided. However, it is not possible to determine this without the scatter plot itself. In this case, the line of best fit would be a good predictor of weight given height.
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Answer: it’s b
Explanation: the one starting from 130 and going up
How are the studies performed on rainbow trout ( Oncorhynchus mykiss) and the moss Pleurozium schreberi and the desert shrub Atriplex lentiformis similar? Both studies are coupled to enzymatic activity. Both studies support the concept that species operate within a narrow optimum temperature range. Both studies support the concept that species operate within a narrow optimum temperature range and are coupled to enzymatic activity. Both studies examine the effects of microclimates and studies support the concept that species operate within a narrow optimum temperature range. Both studies examine the effects of microclimates.
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Answer:
Both studies support the concept that species operate within a narrow optimum temperature range and are coupled to enzymatic activity.
Explanation:
The studies shown in the question above started from the same concept to establish the scientific experiment and had the same objective related to the investigation as temperature changes in the environment where these organisms live influences the enzymatic activity and, therefore, the functioning of their organism, being able to including modifying the environment around them. In summary, we can say that the studies sought to support the concept that species operate within a narrow range of optimal temperature and are coupled with enzymatic activity.
8. How does the atmosphere act as blanket? State difference between lithosphere and
Biosphere?
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differentiate between transpiration, exaporation and evapotranspiration
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Transpiration refers to the process of water loss through the stomata of plants, evaporation is the process of a liquid turning into a gas, while evapotranspiration is the combination of both transpiration and evaporation and refers to the total water loss from a surface.
What is Transpiration?Transpiration is the process by which water is lost from a plant through small pores called stomata. This water loss can occur through evaporation from the surface of the leaves or stems and serves to regulate the temperature of the plant and maintain water balance.
Transpiration also plays a crucial role in the movement of water and nutrients from the roots to the leaves. It is an important aspect of the water cycle and helps to redistribute water and minerals throughout the plant.
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Professionals in the field of psychology maintain a set of core values and ethics that differs slightly from
those held by social workers, because the needs and challenges of psychology patients are typically greater
than for clients who receive social services. Among the core values of psychologists are the efforts to treat
clients with fairness and honesty, to respect clients, and to
O discuss one client's problems with other clients
O do no harm to clients
O dispense prescriptions to clients
O criticize clients
Answers
Among the core values of psychologists are the efforts to treat clients with fairness and honesty, to respect clients, and to do no harm to clients and is denoted as option B.
Who is a Psychologist?This is referred to as a trained mental health professional who helps people handle their mental health challenges through the use of various types of methods and techniques.
They are involved in the treatment of clients with fairness and honesty which is a sign of respect and are not involved in dispensing of prescriptions to clients which is instead done by psychiatrists thereby making option B the correct choice.
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A single gene with two alleles control variation in haemoglobin type in sheep. There are three different phenotypes corresponding to genotypes S^AS^A S^AS^B and S^BS^B respectively in a flock of 175 sheep the frequency of allele S^A was found to be 0.6 and frequency of allele S^B WAS found to be 0.4
Answers
Populations in Hardy-Weinberg equilibrium express the same allelic and genotypic frequencies through generations. Number of individuals expressing each phenotype: 63 sheep S^AS^A, 84 sheep S^AS^B, 28 sheep S^BS^B.
What is Hardy-Weinberg equilibrium?The Hardy-Weinberg equilibrium theory states that allelic and genotypic frequencies in populations that is in equilibrium remain the same through generations. No evolutive forces are acting on these populations, so no evolution occurs.
Assuming a diallelic gene,
Allelic frequencies
The frequency of the dominant allele f(X) is pThe frequency of the recessive allele f(x) is qGenotypic frequencies
p² (Homozygous dominant genotypic frequency), 2pq (Heterozygous genotypic frequency), q² (Homozygous recessive genotypic frequency).The addition of the allelic frequencies equals 1
p + q = 1.
The sum of genotypic frequencies equals 1
p² + 2pq + q² = 1
In the exposed example,
Alleles Frequencies
S^A f(S^A) = p = 0.6S^B f(S^B) = p = 0.4Genotypes
S^AS^A ⇒ homozygousS^AS^B ⇒ heterozygousS^BS^B ⇒ homozygousWe need to get the number of animals expressing each genotype and phenotype. To do it, we just need to use allelic frequencies and calculate genotypic frequencies (p², 2pq, and q²), and then multiply these values by the total number of animals (N = 175).
Genotypic and Phenotypic frequencies
F(S^AS^A) = p² = 0.6² = 0.36
F(S^AS^B) = 2pq = 2 x 0.6 x 0.4 = 0.48
F(S^BS^B) = q² = 0.4² = 0.16
Number of individuals expressing each phenotype
S^AS^A ⇒ 0.36 x 175 = 63 individualsS^AS^B ⇒ 0.48 x 175 = 84 individualsS^BS^B ⇒ 0.16 x 175 = 28 individualsYou can learn more about the Hardy-Weinberg equilibrium at
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Complete question
A single gene with two alleles control variation in haemoglobin type in sheep. There are three different phenotypes corresponding to genotypes
S^AS^A S^AS^B and S^BS^BIn a flock of 175 sheep the frequency of allele S^A was found to be 0.6 and frequency of allele S^B WAS found to be 0.4.
Using the hardy weinberg equation calculate the number of sheep with each phenotypes in the flock show your working
Colistin is an antibiotic used to treat infections in the bloodstream. Some bacteria are resistant to Colistin. Explain how these bacteria have become resistant to Colistin.
Answers
Explanation:
related to chromosomal mutations.
Colistin is a polymyxin antibiotic which is used to treat bacterial infections that is caused by susceptible Gram negative bacteria. Bacteria have become resistant to Colistin through mutations and gene modifications.
What is Colistin?Colistin is also known as polymyxin E. It is an antibiotic medication which is used as a last-resort treatment for the multidrug resistant gram-negative infections including pneumonia.
Resistance to colistin drug occurs with the lipopolysaccharides (LPS) modification through different routes. The most common strategies for resistance to colistin are modifications of the bacterial species outer membrane through the alteration of the LPS and the reduction in its negative charge. The other strategy is the over-expression of the efflux-pump systems.
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Fatty acids are the basic unit of which macromolecule?
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Describe way in which plants are adapted to swed dispersal by animals give an example
Answers
Some seeds feature barbs or hooks that cling to an animal's skin, fur, or feathers. Birds can carry away the sticky seeds of plants like pittosporum.
How do plants adapt to animal seed dispersal?Seeds from plants that rely on animals for distribution are made to fit either within or outside of the animal. Burr- or hook-shaped seeds can cling to an animal's fur. Plants give seeds that are carried internally an enticing fruit pulp reward in exchange for the journey.
What kind of animal dispersal are examples?Mangoes, guavas, breadfruit, carob, and several fig species are some examples. Aardvarks and the desert melon (Cucumis humifructus) share a symbiotic connection in South Africa, where the mammals consume the fruit for food.
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