The Sun is the original source of energy for almost all organisms on the Earth. The way energy passes through an ecosystem is described as energy flow.
What is a trophic level?
The position of an organism in a food chain, web or pyramid.
The amount of food consumed by an organism in a food chain, food web or pyramid.
The size of a bar drawn in a pyramid of numbers or biomass.
Which is the producer in this food chain? grass → cow → human
What is a primary consumer?
A plant that uses sunlight for photosynthesis.
An animal that eats plants.
An animal that eats other animals.
Which is the tertiary consumer in this food chain? tree → caterpillar →shrew → owl
What is transferred along a food chain?
Energy and substances.
What is the original source of energy for almost all organisms?