Can someone help me with this question

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

Why do we perceive objects as retaining their brightness under different lighting levels?

What evidence did mendel find that supported his law of independent assortment? a. some traits are controlled by several different genes. b. a trait can be passed on from a parent to an offspring. c. most traits have a dominant form and a recessive form. d. different traits are passed on independently of each other.