5286942
Descrição
FlashCards por Ella Maggs, atualizado more than 1 year ago
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Criado por Ella Maggs
mais de 10 anos atrás
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| Questão | Responda |
| Why do farmers use fertilisers? | The worlds population is rising, this meaning more food is needed. Fertilisers increase crop yields. |
| What must be done to fertilisers before they are sprayed on the crops? | The fertiliser must be dissolved in water before they can be absorbed by the plant roots. This is because only dissolved substances are small enough to be absorbed. |
| How do fertilisers increase crop yields? | -Replacing essential nutrients used by the previous crop. -Providing nitrogen in plant protein to increase growth. |
| Name the a disadvantage of using fertilisers. | Excessive use of fertilisers can pollute water supplies. |
| Some fertilisers dissolve easily, but what are other fertilisers designed to do? | To slowly release a small amount of fertiliser over a long time. |
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