wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Air pollution 7.3 f1

Total questions: 4

Worksheet time: 3mins

Name
Class
Date
1.

A negative effect for.. What does smoke and dust causes?

a)

breathing problems

b)

respiratory problem

c)

Reducing the ability of blood cells the carry oxygen

d)

Walking problem

2.

what does sulphur dioxide cause for humans?

(a)  

3.

What does carbon monoxide causes?

a)

Respiratory problems

b)

Infection

c)

Reduce the ability of blood cells to carry oxygen

d)

Cause headache 头疼tóu téng, mental Retardation Zhìzhàng智障

4.

what causes acid rain 酸雨

Suānyǔ


(a)