Measuring Environmental Change Flashcards Preview

z - AQA GCSE Core Biology - Old spec > Measuring Environmental Change > Flashcards

Flashcards in Measuring Environmental Change Deck (17)
Loading flashcards...
1

An organisms that is very sensitive to its environment can be used as a...

biological indicator or living indicator

2

When we say an organism is very sensitive to its environment we mean..

It cannot live in some conditions

3

What is a lichen?

A plant-like organism that grows on rocks, buildings and tree bark

4

Lichen will only grow in areas with...

clean air

5

Lichen are sensitive to what type of pollution?

Air pollution

6

The pollution in the air that lichen cannot stand is...

sulfur dioxide

7

If there are lots of lichen growing in an area what does it mean?

The air is clean

8

If there is a lot of sewage in a river then there will be...

low oxygen levels

9

Maylfy larvae are insect-like organisms that live in..

rivers

10

Maylfly larvae can only survive in..

clean river water with lots of oxygen

11

If a river has low oxygen then it must be...

polluted

12

If mayfly larvae are found in a rive then it must be...

clean

13

Sludgeworms are found in..

polluted water

14

If you find sludge worms in a river then the river must be...

polluted

15

Sludge worms can survive in polluted water because...

they can survive with low oxygen levels.

16

Give 3 examples of non living indicators

Satellites to measure sea temperature
Rainfall gauges to measure rainfall
Dissolved oxygen meters to measure river pollution.

17

How does a dissolved oxygen meter tell us how polluted a river is?

Because if there is a low level of oxygen the river is polluted.