How can quadrats be used to investigate biodiversity?
By counting members of each species in the quadrat
Estimating the percentage coverage of each species
What is biological control
when an alien species is deliberately brought into an ecosystem to control pests or pathogens when introduced into an area they aren’t usually found in
How might biological control cause problems?
They grow out of control if they don’t have a natural predator
Carry new diseases that could infect existing species
outcompete or prey on existing species
Why might passingba legislation to protect habitats be hard?
The needs of the human population conflict with the conservation of the environment (e.g rising population =more food needed but farmland disrupts habitats, reducing biodiversity
Name different types of resources organisms require from the environment?
light
food
oxygen
carbon dioxide
water
minerals
What is adaptation
Characteristics of an organism that increases its chance of survival, this is maintained by natural selection
