B15 Human Impacts on the Environment

Question 1

What is biodiversity?

Answer 1

The variety of species on Earth or within an ecosystem

Question 2

Why is biodiversity important?

Answer 2

Helps ensure that ecosystems are stable

Question 3

What 3 areas does pollution affect?

Answer 3

-Land
-Air
-Water

Question 4

List 4 consequences of global warming:

Answer 4

-Rising sea levels
-Changes in organism distribution
-Changes in migration patterns
-Less biodiversity

Question 5

How does global warming affect organism distribution?

Answer 5

Species that require warm conditions may become more widely distributed, and the opposite is true for ones that need cooler conditions

Question 6

List the 4 main things that humans use land for:

Answer 6

-Building
-Quarrying
-Farming
-Dumping waste

Question 7

What is peat made up of?

Answer 7

Partially decayed remains of plants in bogs

Question 8

How can peat release CO2?

Answer 8

-When burned as a fuel
-When decayed by microorganisms in contact with the air

Question 9

List 3 examples of biodiversity protection programmmes:

Answer 9

-Breeding programmes
-Regeneration of rare habitats
-Reintroduction of hedgerows around farmland

Question 10

What are the disadvantages of maintaining biodiversity?

Answer 10

-Expense
-Loss of jobs
-Food security issues

Question 11

Why is deforestation carried out?

Answer 11

-To clear land for farming
-To grow crops for biofuels

Question 12

List 3 consequences of deforestation:

Answer 12

-Less biodiversity
-Greater CO2 release
-Less CO2 taken in