Question

According to the law of conservation of matter, matter is never created or destroyed. Yet in a food pyramid the amount of biomass decreases as we move up through the pyramid, from producers to top level consumers. Why?

Answer 1

After death of a certain being , harmfull gases are released from its body , so it loses its weight, this also explains why dead bodies have less weight.

For example:

A man dies, his body releases toxic gases , and his body is eaten up by micro-organisms .

This is not exact:

Let mans weight be 50 kg.

He loses about 10kg.

Other 40 kg is eaten up by microorganisms.

Answer 2

Due to number of organisms decreases