Impacts On The Enviroment

Question 0

What are abiotic factors?

Answer 0

Non-living- pH, temperature, light intensity, soil moisture content

Question 1

What are biotic factors?

Answer 1

Living- predation, disease, grazing

Question 2

What is intraspecific competition?

Answer 2

Individuals of the same species requiring similar sources

Question 3

What is interspecific competition?

Answer 3

Individuals of different species requiring the same resources

Question 4

What does fertilisers and pesticides result in?

Answer 4

Eutrophication

Question 5

What happens to pesticides as they go up a food chain?

Answer 5

They accumulate

Question 6

What do indicator species do?

Answer 6

Show how high or low a standard of quality of environment areas are by their presence or absence

Question 7

What are alternatives to fertilisers and pesticides?

Answer 7

GM crops and biological controls

Question 8

Sum up eutrophication.

Answer 8

Fertilisers wash into lake/river

Algae grows quicker= plants shaded, algae and plants die

Dead algae and plants decomposed by microbes

Microbes respire and use up oxygen

Oxygen levels fall

Aquatic animals die= decrease in biodiversity