HELP ASAP Which of the following choices is an example of air pressure?
A-moisture causing the air to be heavy
B-molecules of mostly nitrogen pushing down on your skin
C-water vapor cooling to form clouds
D-air temperature cooling to its saturation point
convection

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