B17 Organising an Ecosystem Flashcards
1
Q
What living things cause leaves to decay?
A
Microorganisms (decomposers)
2
Q
Leaves decay more quickly in summer than in winter. Why?
A
It is hotter.
3
Q
A compost heap has holes in it sides to allow gases to enter.
Which gas is needed for decay?
A
Oxygen.
4
Q
A gardener puts dead plants onto a compost heap. Over the next few months, the carbon in the carbon compounds from the plants is returned to the air. Describe how.
A
Microorganisms decompose the dead plant. They do respiration which releases carbon dioxide.
