Sci 8 Unit 4: Ecosystems

Biotic factors are...

• living things

• non-living things

• undead things

Abiotic factors are...

• living things

• non-living things

• undead things

Some examples of biotic factors would be

• trees

• insects

• bacteria

• all of the above

Which of these is NOT an abiotic factor?

• water

• temperature

• grass

• soil

Which picture shows a DESERT ecosystem?

• 
• 
• 
• 

What's the difference between a food chain and a food web?

• Energy flows in many directions in a food chain and only in one direction in a food web

• Energy flows in many directions in a food web and only in one direction in a food chain

• All ecosystems have food chains but not all ecosystems have food webs

How many consumers can you see in this picture?

• 2

• 4

• 6

• 8

When does COMPETITION happen in an ecosystem?

• When there is enough resources for all living things to survive.

• When animals move away from their ecosystem.

• When two or more living things need the same resource to survive.

An organism that is killed and eaten by another organism

• Predator
• Prey
• Competition
• Adaptation

A consumer that hunts is called:

• a producer.
• an omnivore.
• a predator.
• a herbivore.