What does an ecosystem need to be to be sustainable?

Can ecosystems adapt to slow natural changes?

What feature have coniferous trees developed to reduce moisture and heat loss?

Which of the following is NOT an important feature affecting the characteristics of an ecosystem?

Why do the drier lands East of the Rocky Mountains suffer from low rainfall?

What would happen to the ecosystem if the rabbit population is allowed to grow out of control?

In the Yellowstone National Park in the USA, are wolves good for the ecosystem?

In the Yellowstone National Park in the USA, what part do beavers play in the ecosystem?

What is another name for Tundra?

Agricultural fertilisers can lead to eutrophication. What is eutrophication?

What is savanna?

Why is the tundra ecosystem so fragile?

What is the UK’s natural vegetation?

In which global ecosystem do more than 50% of the World’s species of plants and animals live?

Which ecosystem provides more than 25% of all medicines?

What are the global ecosystems character and characteristics determined by?

If a species is hunted to extinction, will this affect the local ecosystem balance?

What is the best way of restoring the ecosystem balance?

Where are tropical rainforests found?

Why is deforestation bad for the ecosystem.

Can periods of extreme weather affect the balance of ecosystems.

In the UK, approximately how many trees were felled by wind, during the 1987 storm?

Where is tundra found?

There are two causes to changes in an ecosystem. Natural change is one. What is the other?

How long do natural ecosystems take to develop?