When does the species at the top of the pyramid get more energy?

Organisms represented at the top of an age pyramid are

Why does oxidation of fatty acids give more energy ?

Observe the a and b statements. Producers are represented at the base of 'the pyramid'. The top of the pyramid is represented a sempty.

Why does the picture get distored?

Sperm gets energy from -

How do consumers get their energy ?

How does the stem help the plant get nutrients??

What does a pyramid of energy represent?