Biology - Chapter 23 Flashcards
Ecosystems (7 cards)
1
Q
What is an ecosystem?
A
All the living organisms found in one area, and the non-living aspects of their environment.
2
Q
Why are ecosystems and the size of them known as ‘dynamic’?
A
Depends on interactions between biotic and abiotic factors.
3
Q
What is a biotic factor? Give examples.
A
Living features of an ecosystem
e.g. predators and disease
4
Q
What is an abiotic factor? Give examples.
A
Non-living features of an ecosystem
e.g. Light and temperature
5
Q
What is biomass?
A
The total weight of living matter in a certain area, transferred up trophic levels through consumption
6
Q
How can we measure biomass?
A
In terms of mass of carbon, or dry mass of tissue.
7
Q
A
