Answer: The CARRYING CAPACITY of a particular population in an ecosystem is defined as the maximum population size that the environment can support indefinitely.
Explanation:
Population size is important as it affects the survival of a given species in a habitat. A small population may be easily wiped out by events such as fires, diseases, unfavorable climatic changes and so on. A large population stands a better chance of surviving dangers and unfavorable conditions.
The carrying capacity of a population in an ecosystem can show some changes due to the following factors:
--> migration of organisms to other habitats
--> invasion or colonization by new species and
--> increase or decrease in birth rates and death rates.
These factors operate during:
--> seasonal climatic changes,
--> changes in food availablity,
--> breeding periods and
--> unfavorable natural events such as fires and droughts.
<span>The correct answer is B. their kidneys can't excrete concentrated salt. Since salt is dissolved in water, the organism sends its water reserves to the kidneys to dissolve and excrete the salt but this leads to dehydration. That's why people at sea who don't know what they're doing often dehydrate themselves by drinking sea water, thinking that they're safe.</span>
The answer is A.
You can remember this by thinking that since there was no change in the amino acid sequence, the mutation is silent in the fact that it didn't cause any trouble in the amino acid sequence.
