Unit 3 and 4 Final Review

Mountains, hills, valleys and coasts are ------------.

• Natural Environment

• Human Environment

the villages, towns and cities are ----------.

• Natural Environment

• Human Environment

Some of our environment is natural but the other has been made or changed by p-------------.

(a)  

----------- are the only living things on Earth that can make their own food.

• Animals

• Human

• Green Plants

• Aliens

In recent years, some large supermarkets and modern factories are built at --------- of the cities.

• Centre

• Outskirts

Today there are more than seven billions people in the world.

• TRUE

• FALSE

We harm our environment with noise and ---------.

• letter

• litter

• loves

• leaning

Today there are some kinds of animals and plants in the world have died out. We can say they’re ----------.

• extinct

• endangered

Many kinds of plants and animals are rare that we can say they’re e--------------.

• extinct

• endangered

We have different seasons because the t----------- Earth moves around the Sun.

(a)