What is the source of energy for aquatic communities? how does energy circulate among organisms in an aquatic community?

This is one form of rna that transports a specific amino acid to a ribosome during protein synthesis.

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?