Answer:
The correct answer is A) There are more species that have the ability to travel 5 kilometers than can travel 15 kilometers.
Explanation:
The ecologists MacArthur and Wilson took the term island biogeography theory to refer to the predictions about the number of species that could be inhabiting on an island.
Island biogeography theory establishes that the two factors that affect species richness in natural communities on an island are <u>the distance from the mainland and the size of the island. </u>
At the same time, these factors affect inmigration and extinction rates. According to the theory, the inmigration rate depends on the distance between the island and the mainland, of the number of species that keep living on the mainland and not stablishing on the island and the <u><em>probabilities that the species can move from the continent to the island</em></u>. Islands that are closer to the continent have higher possibilities of receiving immigrants than those islands that are located farther from the mainland. This is the effect of distance.
The extinction rate depends on the area of the island, the number of species living on it and the extinction probability of these species. The effect of size is reflected in the relation between island size and species diversity. In smaller islands, the probability of extinction is higher than in bigger islands. Bigger islands can have more species than smaller ones.
In the case of two islands of the same size and different distance to the mainland, both of them will have the same extinction rate, but the one closer to the continent will have a higher immigration rate, and so, a higher amount of species. The S value will be higher on the island closer to the continent.
B) less groundwater accumulates
Answer:
The control group is the 15 young hemlocks trees with fencing around them to prevent deer from eating them.
Explanation:
An experiment is designed to test one or more hypotheses. For that, you need control and treatment groups. The control group is the non-effect group, it is the one from which you compare results from the treatment group. On the other hand, the treatment group is the effect group, it is the one that will be exposed to the "thing" that you want to test the effect of. Because you want to evaluate the impact of deers on the young hemlocks trees, the control should exclude deers.
In this case:
Hypothesis: Because deers eat young hemlocks trees and the population of deer had doubled in the last five years, the mature hemlocks trees are more abundant than the young hemlocks trees.
Control: group of 15 young hemlocks trees with fencing around them to prevent deer from eating them.
Treatment: a group of 15 young hemlocks trees with no fencing around them to permit deer eating them.
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D....................................................
Answer: Option C
Explanation:
The human karyotype consists of 23 pairs of chromosomes. If a single pair of chromosome is picket out of the whole karyotype then the chromosome pair will have the some similarities or will have in common some traits.
The length of the chromosome, centromere position, traits and staining pattern will be same for this pair of chromosome.
Hence, the correct answer is Option C
