only part of the energy in one trophic level gets passed to the next level. in any energy pyramid, about is passed from level to level.

a) 10%

b) 30%

c) 50%

d) 90%

A) 10% 
As little as 10% percent is passed from one tropic level to the next.
The majority of it is lost. 
Hope this helps!

Mexico has a host of environmental problems, including significant chemicalpollution  from factory discharges and waste dumping, but the main threat to itsbiodiversity  probably stems from  deforestation  and other natural habitat losses. forest habitat is lost for a number of reasons

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