Aseries of connections of food chain in an ecosystem is called a what

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?