B1.6.1 Decay processes Flashcards
1
Q
Why do living things remove materials from the environment?
A
For growth
2
Q
How are materials returned to the environment?
A
Either in waste materials
When living things die and decay.
3
Q
What organisms are responsible for decay?
A
Microorganisms
4
Q
What condition make microorganisms more active so that they digest materials faster?
(3 marks)
A
warm, moist, aerobic conditions.
5
Q
Why is the decay process essential for plants?
A
It releases substances (such as nitrates) into the soil that plants need to grow.
