Growing crops

Question 1

Fertilisers

Answer 1

• > contain mineral salts: potassium, phosphates and nitrates
• > farmers use artificial and non-artificial-> broken by decomposers.

Question 2

Pesticides and types

Answer 2

Kills pests(organisms that damage crops)

• > insecticides-> kill insects
• > fungicides-> kill fungi
• > herbicides-> kill weeds so no more competition.

Question 3

Varieties

Answer 3

Group of plants that have been bred to have certain characteristics.

• > cross-breeding-> sexual reproduction occurs between diferente varieties to get features of both
• > selective-breeding-> when only plants with certain characteristics are used to breed.