Question

In what sphere do chemicals have the shortest average residence time? A) biosphere. B) lithosphere. C) hydrosphere. D) atmosphere. There are 4000 units of energy available to grass at the 1st trophic level of an ecosystem. If the grass is eaten by a mouse & the mouse is eaten by an owl, how many units of energy will be left for the bobcat that eventually eats the owl? A) 4 B) 40 C) 400 D) 2000

Answer 1

i think chemicals have the shortest average residence time in : A. Biosphere

In biosphere, chemical quickly cycled through various process. As the result, it will move from one object to organism and then to another organism

hope this helps