Have you heard of "Green house effect"(温室效应)?

• Yes, I know what it is.

• I've heard of it.

• I heard, but I don't know what it is.

• Never heard of it

Why do we use a greenhouse on Earth?

• To help plants grow better.

• To make electricity.

• To make plants prettier.

• To make plastic.

What is another name for CO₂?

• Carbon dioxide

• Colourful oxygen

• Chemical air

Green house gasses help to ​ (a)   the ​ (b)   of the planet.

• maintain
• temprature
• humidity
• oxygen
• decrease

Over time the amount of CO₂ (carbon dioxide) in the atmosphere ​ (a)   .

• increased
• decreased
• stayed the same

What is the result of having more CO₂ in the atmosphere?

• The temperature of the planet increases

• The temperature of the planet decreases

• The sun is more bright

• There is no difference

Abundant means 大量 in Chinese. Please write this word in Chinese below.

Industrial revolution 工业革命

Coal 煤

Oil 石油

During the ​ (a)   people started using more ​ (b)   to make ​ (c)  

• industrial revolution
• coal and oil
• electricity

Organize the human activity into 2 categories.

Groups:

(a) produces more greenhouse gas

,

(b) Doesn't produce greenhouse gas

• 
• 
• 
• 
• 
• 
• 
• 

What are the steps we can take to reduce greenhouse gasses?

• Recycle

• Use electric transportation

• Use renewable energy

• Use less plastic

• Stop eating meat