UNIT3 KA5 Flashcards
(7 cards)
1
Q
What is pesticides
A
Pesticides are sprayed on crops to kill animals however it may be passed along the food chain witch can be lethal killing more animals
2
Q
What is the alternative of pesticides
A
GM crops
Biological control- using a animal to kill a animal that will eat the crops
3
Q
What is fertilisers
A
Substance that boosts nutrients for plant yields
4
Q
What are alternatives to fertilisers
A
GM crops
5
Q
Why is nitrogen needed in plants
A
It’s dissolved in soil water and is used to produces amino acids witch is then turned into plant proteins
6
Q
What’s the problem with fertiliser
A
It may go into the water and cause algae bloom
7
Q
What does algae do
A
Reduce o2 levels and blocks sunlight
