Which life function involves changing the energy stored in food into a form that can be directly used by cells?
a) excretion
b) respiration
c) synthesis
d) transport

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

What best explains the inability for life to exist in earth early atmosphere

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