Food chains, energy, biomass and cycles

Question 1

Pyramid of biomass:

Answer 1

Largest at bottom, gets smaller as it goes up.

Question 2

Primary consumers

Answer 2

Eat plant material, herbivores.

Question 3

Secondary consumers

Answer 3

Eat animal material, carnivores.

Question 4

Decomposers

Answer 4

Feed on dead/decaying organisms.

Question 5

Decay:

Answer 5

An essential life process that digests our food or waste matter and recycles materials. Microorganisms break down materials from living things. - These microorganisms are called Enzymes.

Question 6

What are the factors affecting decay?

Answer 6

• Moisture
• Temperature
• Amount of available oxygen

Question 7

Where is carbon found?

Answer 7

In all living things.

Question 8

How is CO2 removed from the atmosphere?

Answer 8

Green plants and algae remove CO2 from the atmosphere by photosynthesis.

Question 9

How is CO2 returned to the atmosphere?

Answer 9

Organisms return CO2 to the atmosphere through respiration.

Question 10

Passing carbon between organisms:

Answer 10

When an animal eats a plant, carbon goes from the plant into the animal. Microorganisms then feed on waste from animals and waste from dead animals.