Climate change is leading to many changes to populations around the world. Some species are now able to live in environments that were to cold before. Other species are moving to areas more like the habitat they are most suited to. When a species moves into an area it is called , and when it moves out of an area it is called . A
immigration, emigration
B
emigration, immigration
C
migration, extinction

The correct answer is - A. immigration, emigration.

Explanation:

In biology, immigration is the act of joining or entering a new species or population of organisms into a particular area or population. These new species carry new alleles and traits with themself in the area and population increasing the population.

On other hand, emigration is the act of leaving the area where a population used to live due to changes in the habitat or the particular habitat is not suitable anymore for the population.

the answer to your question is:

c. complementary base-pairing