Ecosystems

A ______shows the relationships among ALL the species in an ecosystem

• energy pyramid

• food chain

• environmental change

• food web

Organisms that make up the living part of an ecosystem.

• abiotic

• biotic factors

• ecology

• ecosystems

Nonliving things found in an ecosystem, such as air, water, soil, rocks, the sun

• factories

• factor trees

• biotic factors

• abiotic factors

What does a food chain model?

• threatened species in an ecosystem

• how energy is transferred in an ecosystem

• how many organisms eat the same kind of food.

• how DNA is different in each animal

Plants need carbon dioxide that humans and other animals exhale. Humans and other animals need oxygen that plants out out. This is an example of ______.

• Interdependence

• independence

• ecosystem

• biology

Which of the following describes the niche of a tiger in an ecosystem

• herbivore

• consumer

• producer

• decomposer

Which of the following is not an abiotic factor?

• rocks

• air

• water

• animals

Which is a biotic factor?

• sunlight

• air

• bacteria

• soil

Producers get their energy by.....

• eating animals

• photosynthesis

• absorbing it in the soil

• recycling dead organisms back into the soil

Which statement is correct?

• Herbivores hunt prey to eat

• Predators hunt prey to eat

• Omnivores only hunt prey to eat

• producers hunt prey to eat