Can anyone please help me?

Well, energy is lost every time the pyramid goes up, as shown on the pyramid picture. So producers get 100% of the energy, but when it’s consumed by the first consumer the consumer only obtain 10% of the energy, the second consumer eats the first consumer it only obtains 1% of the original energy, and so on. So there isn’t enough energy available at the top of the pyramid to to sustain a whole lot of organisms.

It allows water to resist freezing and thawing cycle.