Which of the following best describes the matter present in an ecosystem? A. When an organism reproduces, new matter is added to it's ecosystem. B. The waste materials generated by one organism are often reused by other organisms. C. The total amount of matter in an ecosystem is constantly decreasing due to the process of decomposition. D. New matter is continuously generated by an ecosystem in a process known as photosynthesis.

How does upwelling affect coastal fisheries? upwelling damages nutrient supplies at coastal fisheries as the warm, nutrient-rich surface water is replaced by nutrient-poor, cold water. upwelling damages nutrient supplies at coastal fisheries as the cold, nutrient-rich surface water is replaced by nutrient-poor, warm water. upwelling improves the nutrient supply at coastal fisheries as the warm, nutrient-rich surface water replaces the nutrient-poor, cold water. upwelling improves the nutrient supply at coastal fisheries as cold, nutrient-rich water replaces the warm, nutrient-poor surface water.

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient

An uncomfortable feeling in the ears when descending in an airplane is caused by changes in air pressure on the: a. inner ear b. middle ear c. eardrum d. hammer/anvil