All organisms depend on other organisms and the environment to live. Human activities can result in ecosystems being damaged. Conserving biodiversity will make sure we have the resources we need.
What does biodiversity mean?
A measure of the number of different organisms living in an area
A measure of the number of different species living in an area
A measure of the population of one species living in an area
Which of these ecosystems would be able to recover most easily to a change?
How does replanting hedgerows around fields have a positive impact on biodiversity?
The fields are made smaller, decreasing the amount of chemical pesticides added to the land
They help reduce soil erosion from the fields
They are home to a number of different species, more than can live in the fields
What could be an ethical argument against breeding programmes?
They are often carried out in zoos, where the animals are captive
They are expensive to carry out
The offspring produced will not be adapted to live in the wild
Which of these scenarios is an example of deforestation?
Creating a plantation of pine trees on an area of wasteland and cutting down the trees to use for timber.
Cutting down fast-growing trees from a forest and replanting any that are taken.
Removing trees from a field to build a motorway.
Which of these is a greenhouse gas?
Which of these is a consequence of global warming?
Increase in the size of the hole in the ozone layer
Increase in the amount of fossil fuels being burnt
Melting of the polar ice caps
Which of these factors reduces biodiversity?
Preserving peat bogs
What does interdependence mean?
All species in an ecosystem depend upon each other
No species in an ecosystem depend upon each other
When young animals leave their parents
How are endangered species protected?
Removal of hedgerows