One possible reason why polar bears might not be able to survive if the environment they live in changes is because
A. the species will experience decreased competition for mates
B. the new environment will cause greater
variation in the species
c. there will be a larger variety of food
sources available
d. they are adapted to the specific
environment in which they now live

B.

Explanation:

Different areas will cause evolution witch takes millions of years to happen

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called