Core 2 - Environmental Change

Question 1

Changes in the environment affect…

Answer 1

Distribution of organisms

Question 2

Animals and plants are subjected by environmental changes because of

Answer 2

Non-living factors:
•temperature 
• rainfall
• air or water pollution
Living factors:
• change in competitor 
• food sources
• disease

Question 3

Lichens are living organism that indicate change in pollution how?

Answer 3

They are sensitive to the contraction of sulphur dioxide in the atmosphere so if they are very hard to find in an area it will be a polluted area.

Question 4

Invertebrate animals can indicate concentration of dissolved oxygen in water how?

Answer 4

Some are very sensitive to the concentration of dissolved oxygen in water so if there aren’t many the water is polluted. E.g. Mayfly larvae

Question 5

Invertebrate animals can indicate water pollution how?

Answer 5

There will be a lot of them in a polluted area e.g. Maggots

Question 6

What non-living indicators can measure environmental change?

Answer 6

Environmental changes:
• satellites used to measure temperature of sea surface and snow
• rainfall measured using rain gauges
• dissolved oxygen meters used to measure concentration of dissolved oxygen in water, to discover how the levels of water pollution is changing