5286942
Description
Flashcards by Ella Maggs, updated more than 1 year ago
|
Created by Ella Maggs
over 8 years ago
|
|
| Question | Answer |
| 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. |
Want to create your own Flashcards for free with GoConqr? Learn more.