Choose the image that shows a cast. A fossilized footprint.

The outline of a leaf on a gray rock.

A raised form of tentaclelike shapes.

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

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

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes