All energy is any ecosystem starts as

All the energy in an ecosystem enters through the sun. The sunlight is absorbed by the green plants known as the producers of the ecosystem.

This energy is transferred to the primary consumers when they eat producers (green plants)

The energy from the primary consumers are transferred to secondary consumers and then to tertiary consumers.

So, we can say that the primary source of energy is Sun.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

it should be briana that has it to me