Ecology

Question 1

What is biodiversity?

Answer 1

The variety of different species in a particular area

Question 2

In the context of climate change, what is meant by the term ‘mitigation’?

Answer 2

Methods to achieve the reduction in the output and amount of greenhouse gases. (1)

Question 3

Humans can use the land for many purposes which negatively affects biodiversity. Name 3.

Answer 3

• Quarrying (1)
• Deforestation (1)
• Over-hunting (1h)

Question 4

The amount of waste produced by humans is increasing year after year.
Describe TWO reasons for this.

Answer 4

An increase in the human population (1)
An increase in the standard of living (1)

Question 5

Explain how deforestation has an effect on the soil

Answer 5

The soil is no longer held together by roots (1), so the wind can blow away soil. (1)

Question 6

What is a quadrant?

Answer 6

the equipment used to determine the area in which organisms are counted during sampling.

(transects are another way)

Question 7

Describe what is meant by a ‘stable community’.

Answer 7

All populations and environmental factors are in balance (1), and there is a constant population size. (1)