Type the ecosystem numbers

Exercise and reference answers

Questions

1. Answer

   10

   Question

   What percentage of energy passes to the next trophic level?

2. Answer

   5

   Question

   How many steps are there in the process of decomposition?

3. Answer

   170

   Question

   Annual net primary productivity of the biosphere, in billion tons?

4. Answer

   55

   Question

   Productivity of the oceans, in billion tons?

Instructions

Type the number only.

Explanation