What is the original source of almost all energy in most ecosystems?

An organism that produces its own food supply

What is the term for each step in the transfer of energy and matter within a biological community?

What is not a form of symbiosis?

Study of interactions between organisms and their environment

Members of a species in a defined area

Where an organism lives

Non-living factor that affects an ecosystem

Living factor that affects an ecosystem

Organisms that breaks down and absorbs nutrients from dead organisms

What form of symbiosis is this?

Consumer that eats plants

What does fungi do to dead plants and animals

In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?

Which of the following leads to a decrease in biodiversity?

In the food web shown, the snail would be considered...

An organism that eats both animals and plants

symbiotic relationship in which one organisms benefits and the other organism is not affected

a relationship between two in which one species, the predator, feeds on the other species, the prey