Biodiversity & Human Impact on the Environment - exam practice
Biodiversity & Human Impact on the Environment
Question 1 of 3
Between January and March of 2022, over 940 km2 of Amazon rainforest was cleared and burned in Brazil.
940 km2 is roughly the size of New York City.
This was the highest rate of deforestation the country had ever seen.
The cleared land will produce crops for only a few years.
Why are rainforests like the Amazon being cleared and burnt to provide land for crops?
Explain why the cleared land will only produce crops for a few years.
Explain the short-term and long-term effects that burning of rainforests may have on the Earth’s atmosphere.
The photograph below shows a cheetah.
The cheetah is an endangered species, with just over 7,000 cheetahs remaining in the wild.
Scientists are worried that the cheetah might become extinct.
Explain the meaning of the term "extinct".
Which activity will be least likely to lead to the extinction of species?
What is not a reason for having conservation programmes?
Explain why it is important to conserve the cheetah's food supply and all the species that inhabit their ecosystem.
Farmland expansion is responsible for 90% of deforestation around the world.
Deforestation leads to decreased biodiversity.
When trees are removed it can become more difficult for other plants and animals to survive.
Give one reason why.
Name one type of toxic chemical used on farmland.
Suggest three ways that ecologists may try to increase biodiversity.