Food web Questions

Question 1

what is the source of energy that almost all living things depend on

Answer 1

the sun

Question 2

what is the name of the process in which green plants absorb a small percentage of the suns energy

Answer 2

Photosynthesis

Question 3

Describe how the energy stored in grass end up in a human that has eaten a beef burger

Answer 3

energy is passes through the food chain. plant mainly grass get their energy from photosynthesis SOME OF the energy can be passes from each consumer, by eating it

Question 4

Give three ways in which energy can be lost from a food chain

Answer 4

• 90 % of energy is lost as heat (during respiration)
• through movement
• or in materials that are the consumer does not digest

Question 5

approximately what percentage of available energy is passes on at each tropic level

Answer 5

10 %

Question 6

explain why this transfer of energy to another places limits the length of a food chain

Answer 6

if 90% of energy is lost at each stage then the longer the food chain the less energy there for organism at the top.

Question 7

what happens to the energy in organisms at the very top of a food chain when they die

Answer 7

decompress release the energy back into the ecosystem