Create an analogy for the relationship between photosynthesis and cellular respiration.

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity

Explain what is meant by a river’s load, and describe how the load is carried.

Asample of digestive juice was removed from the stomach of a pig. the juice was placed in a test tube along with some grains of wheat. a second test tube was set up containing an equal number of wheat grains, with distilled water rather than digestive juice. the test tubes were kept for 8 hours at 40 degrees c. after 8 hours, the grains inside the digestive juice had broken into tiny particles. the grains of wheat, in the water, were wet but otherwise unchanged. what is the control group?