If a population of deer exceeds its carrying capacity, it is likely that the
population will crash.
population will become extinct.
carrying capacity will increase.
birth rate will increase.

Answer;

population will crash.

Explanation;

-Carrying capacity of an ecosystem is the size of the population that can be supported indefinitely upon the available resources and services of that ecosystem. An ecosystem’s carrying capacity for a particular species may be influenced by factors as its ability to regenerate the food, water, atmosphere, and other necessities that the organisms need to survive.

-Ecosystems cannot exceed their carrying capacity for a long period of time. In situations where the population density of a given species exceeds the ecosystem’s carrying capacity, the species will deplete its own source of food, water, or other necessities, and will soon begin die off.

a, i am pretty sure.

answer: a. a gene that causes a specific trait.