Why is there less biomass at the top of the energy pyramid?(1 point)

Responses

Secondary and tertiary consumers live longer, so there are fewer of them because they reproduce more slowly.
Secondary and tertiary consumers live longer, so there are fewer of them because they reproduce more slowly.

Secondary and tertiary consumers have to consume a lot more food to support themselves, so there are fewer of them.
Secondary and tertiary consumers have to consume a lot more food to support themselves, so there are fewer of them.

Secondary and tertiary consumers are larger, so there are fewer of them.
Secondary and tertiary consumers are larger, so there are fewer of them.

Secondary and tertiary consumers have bigger ranges, so there are fewer of them because they each need a lot of space.
Secondary and tertiary consumers have bigger ranges, so there are fewer of them because they each need a lot of space.

1 answer

The correct response is:

Secondary and tertiary consumers have to consume a lot more food to support themselves, so there are fewer of them.

This is because energy is lost at each trophic level, primarily as heat, and typically only about 10% of the energy is transferred from one level to the next. As a result, there is less biomass and fewer individuals at the higher trophic levels compared to the lower ones.