B17 Flashcards
1
Q
Feeding relationship order?
A
Producer - primary consumer - secondary consumer - tertiary consumer
2
Q
Producers?
A
Photosynthetic organisms that produce biomass for life on earth.
3
Q
Factors affecting rate of decay of organic matter?
A
temperature, oxygen availability, moisture levels
4
Q
Product of anaerobic decay?
A
Methane gas
5
Q
What can biogas generators be used to produce?
A
methane as a fuel
6
Q
Why does temperature affect the rate of decay?
A
Chemical reactions in most organisms work faster in warm conditions - enzymes in decomposers denature if too hot or cold
7
Q
Why does moisture affect the rate of decay?
A
- microorganisms grow faster in moist conditions,
- easier for them to digest their food
- prevents them from drying out
8
Q
Why does oxygen levels affect the rate of decay?
A
- lost decomposers respire aerobically - need oxygen to grow/ reproduce/ break down food
