Ecology

The Earth's temperature is getting higher and higher every year. It is called...

• oxygen

• a global warming

• an endangered species

• pollution

A place where rubbish is thrown away.

• a dumping site

• sewage

• pollution

• exhaust fumes

Air ............. is a serious problem in cities.

• exhaust fumes

• recycle

• oxygen

• pollution

People should protect the ......... they live in.

• dumping site

• environment

• endangered species

• exhaust fumes

The California condor, the mountain gorrila and the northern white rhinoceros are just a few examples of the world's most ........

• dumping site

• global warming

• environment

• endangered species

The Amazon rainforest produces 20% of the world......

• sewage

• pollution

• oxygen

• environment

Harmful gases produced by cars are called...

• oxygen

• exhaust fumes

• a global warming

• sewage

Dirty water that pollutes rives.

• sewage

• oxygen

• a dumping site

• exhaust fumes

A place where rubbish is thrown away.

• sewage

• recycle

• a dumping site

• pollution

To use some materials again.

• recycle

• pollution

• a global warming

• oxygen