Extrusive rocks that cool quickly have: a. fine grains or no crystals
c. large or coarse grains
b. small and large crystals
d. a clear appearance
PLZ HELP

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