Ahypothesis is a possible explanation that can be tested by observation or experiment

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?

In the diagram below, the northern hemisphere would be in what season at position a a. fall b. winter c. summer d. spring

In the presence of oxygen, glycolysis is followed a. the krebs cycle b. lactic acid fermentation c. alcoholic fermentation d. photosynthesis