Ecology - Pyramids

4 important questions on Ecology - Pyramids

What does dividing all organisms in an ecosystem into producers, primary consumers and secondary consumers give you?

It gives you a simpeler food chain that is easier to study.

What can be shown in a pyramid of numbers?

The number of individuals in each link of a food chain.

Does the number of individuals in each link of a food chain always decrease?

No. For example, the number of trees in a forest is much smaller than the number of herbivores (snails, caterpillas, beetles, etc.), but the numerous herbivores do serve as food for a smaller number of birds.
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How can you calculate how much biomass there is in each link of a food chain?

You can do that by calculating the biomass of all organisms in a link together.

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