Organic food grown with natural fertilizers may be less expensive than those foods not utilizing natural fertilizers.
举一反三
- 1. Natural foods are rich inessential ____①____and ___②___.2. The use of chemicals and fertilizers is to increase the __③_not the _④___of foods.
- Natural foods also ________ vegetables not nourished by chemical fertilizers.
- In the past__________. A: it was expensive for farmers to buy chemical fertilizers B: farmers grew pineapple on a small scale C: farmers made great profit by produing organic foods D: farmers received great help from the U.N. Food and Agriculture Organization
- Natural foods make up a small part of organic foods.
- What kinds of food are considered natural foods?