Ecosystems

Question 1

Ecosystem

Answer 1

all the organisms and the environment in which they live in

Question 2

Community

Answer 2

all the organisms that live and interact in an ecosystem

Question 3

interdependant

Answer 3

different species that depend on each other for resources

Question 4

habitat

Answer 4

a place within an ecosystem where a particular population lives

Question 5

abundance

Answer 5

measure of how common something in an area is, such as population size

Question 6

population size =

Answer 6

no of organisms x (total size of area/total area of quadrats)

Question 7

Why do we use quadrats

Answer 7

measuring number of organisms by counting is often impossible, so estimating by population size is faster

Question 8

food web

Answer 8

the feeding relationships between the organisms in a community

Question 9

How can food webs be used

Answer 9

to predict what will happen if there are changes in an ecosystem,
if top predators die out, then more tertiary consumers live