carbon and nitrogen cycle

Question 1

draw carbon cycle

Answer 1

just draw it

Question 2

nitrogen cycle

Answer 2

just draw it

Question 3

percentage energy passed on between trophic levels

Answer 3

10%

Question 4

reason why energy passed between trophic levels is lost

Answer 4

respiration, waste products, not all material consumed, heat loss

Question 5

what are nitrates used for in living organisms. how?

Answer 5

to make amino acids and protein for growth and repair. they are assimilated

Question 6

relationship of nitrogen fixing bacteria growing in root nodules and the plant

Answer 6

symbiotic. mutually beneficial. bacteria fix nitrogen in air into NH4 for the plant to assimilate and make proteins. bacteria gets a habitat to live in