Population Size and Ecosytem Pmt

Question 1

The main source of car on for these leave is from the air inside the pod, not the atmosphere. Describe how carbon inside the pod is made available for use by these leave (4)

Answer 1

. Carbon in the molecule of dead insect
. Decomposed by bacteria
. Carbon dioxide is released
. From respiration

Question 2

Describe how nitrogen is made available for use by these leaves (3)

Answer 2

.Decomposer release ammonium ion
. Ammonia converted to nitrite
. Nitrite converted to nitrate
. Nitrifictaion

Question 3

Explain how deforestation could increase the concentration of carbon dioxide in the atmosphere (2)

Answer 3

. Less co2 used in photosynthesis
. More co2 produced in combustion
. More decomposition so more co2

Question 4

To find the dry mass the ecologist drier the grass sample into an oven at 65c. Describe how the ecologist would be confident that all the water had been removed but none of the organic matter had been lost (2)

Answer 4

. Repeat until constant mass is recorded
. No burning or combustion