If we can see water, can fish see air? But since we can't see air, can fish not see water?

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.