What are the similarities between a lake and a river

Average annual precipitation and are the two major features that define the biomes on earth.

(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.

Sequence how oxygen accumulated in the atmosphere and the effect it had on life by completing the flowchart