Ch.2 Key notes

P. 9
Bad air is bad for our health because it damages our respiratory system and makes us cough.

P.10
Plants help beautify the environment.

P.11 
Problems

1. Risk of landslips
2. People walking along the uncovered pavement are exposed to the sun
3. Exhaust fumes from cars (air is not fresh and polluted)
4. A dull-looking environment

Solution: Plants and flowers

1. Prevent landslips
2. Provide shade
3. Freshen air
4. Beautify the environment
5. The flower attracts butterflies

P.12

1. The Department plants trees in parks and by the roadsides to beautify our community.

2.The Department plants on the slopes to prevent soil erosion and landslips.

P.13

1. They are planting a tree to give support to greening activities.