Biology Farming Topic- Key Knowledge Flashcards
(3 cards)
1
Q
Describe how pollution by fertiliser can affect aquatic ecosystems
A
- Accumulation of fertilisers in bodies of water is eutrophication
- This can cause excessive algae bloom which blocks sunlight
- Aquatic plants do not have the energy to perform photosynthesis
- Buildup of carbon dioxide and lack of oxygen cause animals to die
2
Q
What are pesticides?
A
Chemicals used to control or kill a pest species
3
Q
What is biological control?
A
Introducing a natural predator of a pest species to control the population
