The total energy from an isolated system is constant; energy can be changed from one form to another, but can't be created or destroyed.
A. 1000 grams. 1000 is divided by ten each time it goes up the trophic scale. since it goes up 2, 3 and 4, the answer is 1000. (1000/10/10/10=1)
Enzymes is a substance produced by living organisms thats acts as a catalyst to bring about a specific biochemical reaction. <span />
