Ecology

Question 1

Describe the process of global warming

Answer 1

Energy radiates from the sun > earth radiates energy back into space > radiation gets trapped by greenhouse gases > earth warms up

Question 2

What are the consequences of global warming?

Answer 2

The consequences of global warming is: melting ice caps leading to a rise in sea levels, distribution of organisms changing, changes in migration patterns, decrease in biodiversity

Question 3

What are the two types of pollution?

Answer 3

The two types of pollution is air pollution and water pollution

Question 4

What are the types of air pollution?

Answer 4

The types of air pollution are acidic rain and smog

Question 5

What are the types of water pollution?

Answer 5

The types of water pollution are industrial waste and human/farming waste

Question 6

What is the process of eutrophication?

Answer 6

The process of eutrophication is fertiliser washing into the water, this causes algae to bloom, the bloomed algae covers the sun, no sun means that plants die, micro organisms decompose dead plants using oxygen in respiration, aerobic organisms die due to lack of oxygen

Question 7

What are the five processes involved in the water cycle?

Answer 7

The five processes involved in the water cycle is evaporation, condensation, precipitation, percolation, transpiration

Question 8

What is percolation?

Answer 8

Percolation is the movement of water through the earth and into the river

Question 9

Why do plants take in carbon from the air?

Answer 9

Plants require carbon dioxide for photosynthesis

Question 10

What are the organisms called which feed on dead organisms?

Answer 10

The organisms that feed on dead organisms are detritus feeders and microorganisms such as fungi

Question 11

What human activity is involved in the carbon cycle?

Answer 11

The human activity involved in the carbon cycle is combustion which is where fossil fuels and animal waste is burned

Question 12

What are the 3 factors of environmental changes which affect organisms called?

Answer 12

Seasonal, geographic and human interaction are the 3 types of environmental factors

Question 13

What are the 4 factors which affect the rate of waste decay?

Answer 13

The 4 factors which affect waste decay are temperature, water availability, oxygen availability and the number of microorganisms/detritus feeders to eat the waste

Question 14

Which gas is biogas made from?

Answer 14

Biogas is made from methane

Question 15

Where is biogas made in?

Answer 15

Biogas is made in fermentors

Question 16

What is biogas used for?

Answer 16

Biogas is used for lighting, cooking, heating

Question 17

What are the two generators which use biogas called?

Answer 17

Batch generators and continuous generators use biogas

Question 18

How can we maintain biodiversity?

Answer 18

Breeding programmes for endangered species, protection/regeneration of rare habitats, reduce deforestation and carbon emissions

Question 19

What are the issues of the methods used in maintaining biodiversity

Answer 19

The issues in the methods of maintaining biodiversity is high costs, risk of jobs, homes need to be built

Question 20

Why are peat bogs destroyed

Answer 20

Peat bogs are destroyed for compost