If scientists identify an animal with bilateral symmetry and no segmentation, which phylum can it definitely not belong to?
a. mollusks
b. roundworms
c. flatworms
d. annelids

Describe two recent or ongoing space missions.

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel

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