1
Q
ecosystem
A
a community of plants and animals living together in an environment that depend on one another for resources (interdependent)
2
Q
community
A
different organisms that live in a particular area
3
Q
population
A
a group of the same species living in a particular area
4
Q
habitat
A
an area in which an organism or population lives
5
Q
abundance
A
a measure of how common something is in an area (e.g. population)
6
Q
quadrat
A
- an area that is divided into equally sized squares, with each square being one quadrant
- can be used to measure population
6
Q
population formula
A
total no. of organisms X total size/ total area of quadrat
7
Q
food web structure
A
producers start at the bottom, then primary consumers (herbivores), secondary consumers, tertiary consumers and apex predator
(ch9) ecosystems & material cycles
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