Human Influences on the Environment

Front

What detrimental impacts can sulfur dioxide have on the environment?

Back

Sulfur dioxide can dissolve in water to form acid rain which can erode buildings and pollute water sources.

Front

What detrimental impacts can carbon monoxide have on the environment?

Back

Carbon monoxide binds irreversibly to haemoglobin which prevents it from carrying oxygen. Too much exposure can cause unconsciousness and death.

Front

Name 5 greenhouse gases.

Back

Water vapour, Carbon dioxide, Nitrous oxide, Methane, CFCs.

Front

Give 3 human activities that contribute to greenhouse gases.

Back

Burning fossil fuels, Deforestation, Large scale livestock farming.

Front

How do greenhouse gases lead to global warming?

Back

Greenhouse gases allow heat from the sun to enter the atmosphere. The gases act as a 'blanket' and trap the heat in the atmosphere.

Front

State 3 negative consequences of global warming.

Back

Sea level rise caused by melting icebergs, Disrupted farming and agriculture, Increased spread of diseases in warmer climates.

Front

Describe how sewage in waterways can affect aquatic life.

Back

Microorganisms that decompose sewage will use up the oxygen in the water so that there is not enough oxygen left for respiration for other aquatic organisms.

Front

What is eutrophication?

Back

An excess of nutrients in a body of water, often due to fertilisers in the water source.

Front

Why is eutrophication bad for aquatic life?

Back

It causes an 'algal bloom' which decreases oxygen supplies in the water and degrades the water quality.

Front

State 5 negative effects of deforestation.

Back

Leaching, Less CO2 taken out of the atmosphere from photosynthesis, Soil erosion, Habitat disruption, Disruption of the carbon cycle.