What may cause a species to become less genetically diverse?

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

How do living things obtain phosphorus

As a bee feeds upon the nectar produced by a flower, the bee may become coated with the flower's pollen. as the bee flies from flower to flower, some of this pollen may contact a flower's pistil, resulting in pollination. this relationship between the bee and the flower is an example of a. parasitism b. commensalism c. mutualism d. competition