Which of the following describes the amount of organic material that is available for transfer to the next trophic level after subtracting material used for respiration?.

Class iii atmospheric hazards are those involving

What is the leading cause if water scarcity throughout much of the world

Zachary has been trying to work on an essay for almost three hours, be he can't seem to focus for more than 15 or 20 minutes at a time. what should he do so that the quality of his work doesnt suffer because of poor concentration and lack of energy