measuring environmental change

Question 1

Name three living indicators.

Answer 1

Mayfly nymphs, lichens and phytoplankton.

Question 2

name three non-living indicators.

Answer 2

Temperature(if high then co2), nitrate levels(if rivers get polluted) and carbon dioxide levels.(air)

Question 3

What are lichens sensitive to?

Answer 3

Sulfur dioxide. So they can tell how high pollution is in a given area. If there are lots of lichens in a river, this indicates that the river is very clean. (power stations and car engines)

Question 4

What are mayfly nymphs sensitive to?

Answer 4

water pollution. They are very sensitive to the oxygen levels in the water. Again if you find mayfly nymphs in a river then the water is clean.