Chemical

Farming Advantages Stopping crop disease and

increase __production__ Chemical

Farming Disadvantages Damaging the land:

Killing the helpful _ bacteria and pests _ Damaging people's health:◆Many chemicals in the food supply can lead to cancer or other illnesses.◆Food grows too fast to be full of much _nutrition_.]

Organic

farming definition To grow good food and avoid damaging the environment or people's health Organic

farming Methods ◆Using natural waste from animals as fertilizer

◆Changing the kind of in each field every few years◆ Using different levels of soil to plant crops◆ Planting grass between crops Step Ⅲ Project

Persuade farmers to grow the crops by organic farming with the knowledge learnt.

What is organic farming?

What fertilizer should they use? Why?

How to plant the different crops?

...

Step Ⅳ Language points

Step Ⅴ Listening

1. What is the main topic of the conversation?

The possible bad effects of chemical fertilizers on the fruit and vegetables that we eat today.

2. Listen to the dialogue a second time. Decide if the following statement are true or false.

1. Paul thinks that Carrie is not telling him the truth.

　2. Using chemical fertilizers always makes vegetables empty inside.

3. Today's fruit is not as healthy for people as fruit fifty years ago.