Match the words and phrases with their meanings.

Many animals are losing their homes because of __________, as people cut down too many trees to build farms or houses.

Farmers are worried about __________ because the weather is becoming too hot for their crops.

Many tourists visit Africa to see amazing __________ like lions and elephants in nature.

The Amazon rainforest has rich __________ because it is home to thousands of different types of plants, insects, and animals.

Factory smoke causes serious __________ as it makes the sky grey and the air hard to breathe.

In a healthy __________, plants, water, and animals all rely on each other to survive and grow.

Global warming causes __________ weather, such as very strong storms, heavy floods, and long periods with no rain.

We must keep the river clean because it is an important __________ for fish and frogs.

Global warming is a complex __________, but planting more trees is a simple way to help solve it.

If we kill too many snakes, the number of rats will increase too much, and that will upset the natural __________.

If we continue to destroy the forests, a serious __________ will be that we won't have enough clean air to breathe.

Choose the correct word to complete the following sentence.

Loud noise from ships has a negative effect on / in / with whales.

Choose the correct word to complete the following sentence.

Hunting tigers for their fur puts them on / in / at danger of disappearing forever.

Choose the correct word to complete the following sentence.

Tourists cause damage with / for / to the environment when they take rocks or plants home as souvenirs.

Choose the correct word to complete the following sentence.

Many wild animals face / meet / look the problem of losing their natural habitats.

Choose the correct word to complete the following sentence.

If we kill all the snakes in the forest, we annoy / upset / worry the balance of nature because the number of mice will grow too fast.

Factories can contaminate rivers if they release untreated waste into the water.

It is vital that we stop cutting down trees, or else climate change will become much worse in the near future.

We must act now to preserve the rainforests so that animals do not lose their homes and future generations can see them.

Burning fossil fuels releases hazardous gases into the air, which can cause serious lung diseases in humans.

Many farmers are trying to use organic methods instead of artificial fertilizers to keep the soil healthy.

In the past, clean water was abundant in this region, but now it is hard to find due to long periods of drought.