Question

the movements of energy and nutrients through living systems are different because

Answer 1

reproduction and a new life is also genrate by one living thing to next

Answer 2

Nutrients cycle through ecosystems because the earth is a closed system with regards to nutrients. So, we don't get any new input of carbon, nitrogen, water, etc. (except for some minimal input from meteors).

Energy, however, does not cycle - it flows. This is because every time energy changes form (like from radiant to chemical or goes from one organism to the next), the transfer is not very efficient. Only about 10% actually makes it to the next stage. The rest is lost as entropy. This means that we need a continual input of energy, which we get from the sun. With regards to energy, then, the earth is an open system.

Answer 3

simply put Energy flows in one direction and nutrients recycle.

Answer 4

energy flows in one direction and nutrients recycle