The heart, liver, and stomach are each examples of
a. a nerve.
b. a tissue.
c. an organ.
d. an organ system.

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

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. agouti x albino a) 1/2 albino, 1/2 agouti b) all agouti c) 3/4 agouti, 1/4 albino

Amarine ecologist has constructed the conceptual model shown in the diagram. what predictions can be made from using this model? where the tertiary consumers get their energy how often primary producers are able to reproduce when bacteria and fungi initiate the process of decomposition whether other secondary consumers are present