Ecosystems

An important abiotic factor in ALL ecosystems is the 

• ecology
• climate
• plants
• animals

The study of ecosystems is called

• climate
• habitat
• ecosystems
• ecology

ALL the living & non-living things in an environment are called an

• population
• biotic
• ecosystem
• habitat

Autotrophs are organisms that

• rely on other organisms for their energy & food supply.
• consume plant & animal remains and other dead matter.
• use energy they take in from the environment to convert inorganic molecules to organic molecules.
• obtain energy by eating only plants.

According to the biomass pyramid shown, which organism or group of organisms would have the most mass?

• Sparrowhawk
• Bluetit
• Catepillar
• Oak tree

According to the biomass pyramid shown, which organism would eat the catepillar

• producer
• primary consumer
• secondary consumer
• tertiary consumer

According to the food web shown, what would occur if there were a drastic decrease in the squirrel population?

• There would be fewer vultures
• There would be more nuts and seeds.
• There would be fewer vultures & there would be more nuts and seeds.
• There would be more grass.

The part of Earth where organisms can live.

• biotic factors
• biosphere
• ecology
• biology

All of the populations that live in one area together

• limiting factors

• populations

• community

• speed limit

Decomposers get their food by __________.

• making it themselves
• eating live organisms
• using dead organisms
• eating themselves