Vocabulary
Relative clauses
Articles
Definition
Definition II
100

I can't sleep away/through/along the storm. The wind is really loud.

through

100

My friend, whose / which project about environmental protection won the competition, goes to an eco-school.

whose

100

Jake is ___ captain of our junior football team.


the 

100

flow

a smooth continuous movement of water

100

the air, water, and land in or on which people, animals, and plants live

environment

200

It's important to develop returnable/renewable/ reusable energy instead of depending on oil, gas and coal.   

renewable

200

Car exhaust fumes, who / which cause a lot of pollution, are dangerous to human health.

which 

200

There’s __ article in the paper today about endangered species.


an 

200

megacity

a very large city, especially one with more than 10 million people livingin it

200

a sudden violent movement of the earth's surface, sometimes causinggreat damage

earthquake

300
It's obvious that climate turn / exchange / change is happening, but not everyone agrees on the cause. 

change

300

Machu Picchu, (be/high/the Andes), was built by the Incas in the 15th century.

which is high in the Andes 

300

Wendy is __ famous artist.You can see her paintings in __ best museums in __ world.

a, the, the

300

renewable energy

energy derived from natural sources (solar, wind, hydroelectric)

300

the food is not good to eat or drink any more because it is too old

go off

400

We were really scared when we went / came/ turned face to face with a bear in the forest.

came

400

Antarctica,(rain/rarely/fall), is actually the largest desert in the world.


where rain rarely falls

400

__ capital of __ Netherlands isn't __ Hague. It's __ Amsterdam.

the, the, the, -

400

herd 

a large group of animals of the same type that live and feed together

400

an area of water smaller than a lake, often artificially made

pond

500

Because of global heating / changing / warming, storms storms are becoming more frequent and dangerous.   

warming

500

The Amazon river, (flow through/six countries), is the longest river in South America.

which flows through six countries


500

40 percent of people in __ Dhaka, __ capital of Bangladesh, live in __slums where many people are without __ water and __ electricity.

-, the, -, -, -

500

predator

an animal that hunts, kills, and eats other animals

500

a place where water naturally flows out from the ground

spring