Why is energy transfer between trophic levels inefficient

because energy is lost when one trophic level goes to a level higher.

Explanation

This is due to the fact that an organism is not fully consumed.

it has one origin of replication, but it proceeds in two directions - d)

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .