Lá cây chứa rất nhiều chất diệp lục trong lục lạc làm cho lá có màu xanh. Ở lá dầu 1mm vuông có khoảng 500 000 lục lạp. Tính số lục lạp trên một lá thầu dầu có diện tích 210 cm vuông

Các câu hỏi liên quan

II. Rewrite these sentences, using PHRASE OF PURPOSE : 1. Leave early so that you may get home before dark. ………………………………………………………………………………………………………. 2. This man changed the address constantly so that he could avoid the police. ………………………………………………………………………………………………………. 3. I shouted in order that I could warn anyone of danger. ………………………………………………………………………………………………………. 4. Banks are developed so that they can keep people’s money safe. ………………………………………………………………………………………………………. 5. Mary went to the library in order that she could borrow some books. ………………………………………………………………………………………………………. 6. Yesterday, my father went to the bank so that he would open a checking account. ………………………………………………………………………………………………………. 7. I went to see him so that I could find what had happened. ………………………………………………………………………………………………………. 8. Tom is saving up so that he could buy a new bicycle. ………………………………………………………………………………………………………. 9. He hurried so that he could catch the train. ………………………………………………………………………………………………………. 10. She is learning French so that she will be able to speak it when she comes to Paris. ……………………………………………………………………………………………………….