1. Energy transfer is inefficient between trophic levels because A. Molecules are fully digested from each trophic level.

B. Dead organisms and waste are recycled throughout the trophic levels.

C. Organisms within a trophic level are fully consumed.

D. All organisms within a trophic level die.

2. Primary productivity is defined as

A. The rate that plants and other photosynthesis organisms produce organic compounds.

B. The process where green plants and some other organisms convert light energy into chemical energy using carbon dioxide and water.

C. The overall amount of energy captured by plants and other photosynthetic organisms by the chloroplast.

D. The adjusted amount of energy in an ecosystem due to energy use by organisms for respiration.

Thanks if you help, It's highly appreciated. :-)

The diagram below represents a marine food web and a process that can harm the human population. each circle represents an organism and the smaller dots inside them represent a toxic substance. what is being represented and how does it harm the population? the diagram represents biological half-life, in which toxins build up in organisms higher up on the food chain, and this can negatively impact humans who consume the organisms and the toxic substance. the diagram represents biomagnification, in which toxins build up in organisms higher up on the food chain, and this can negatively impact humans who consume the organisms and the toxic substance. the diagram represents the process by which different organisms prey upon each other; this can impact the human population by reducing the number of organisms that do not contain the toxin. the diagram represents the way that toxins are metabolized by living organisms, with those at greater trophic levels able to metabolize more efficiently than those at lower levels. this means that those at higher tropic levels are safer for humans to consume compared to the organisms at lower trophic levels.

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.

Speed is the ratio of the distance of an object moves to