Environmental Issues in Cambridge Unit 8

What are the main greenhouse gases responsible for climate change?

• Water vapor (H2O), carbon monoxide (CO), and ozone (O3)

• Carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O)

• Oxygen (O2), sulfur dioxide (SO2), and nitrogen (N2)

• Hydrogen (H2), argon (Ar), and helium (He)

Explain the impact of deforestation on the environment.

• Deforestation has no impact on the environment

• Deforestation has a significant impact on the environment by causing loss of biodiversity, soil erosion, and disruption of the water cycle.

• Deforestation leads to increased biodiversity, improved soil quality, and enhanced water cycle

• Deforestation results in reduced soil erosion, increased biodiversity, and improved water cycle

How does pollution affect human health and the ecosystem?

• Pollution has no impact on human health or the ecosystem

• Pollution affects human health by causing respiratory issues, heart disease, and cancer. It also harms the ecosystem by contaminating water, soil, and air, leading to the decline of plant and animal species.

• Pollution only affects human health, not the ecosystem

• Pollution actually benefits human health and the ecosystem

What are some examples of renewable energy sources?

• Solar panels, wind turbines, geothermal power plants

• Nuclear power, fossil fuels, hydroelectric power

• Sunlight, wind, water, geothermal heat, and biomass

• Coal, natural gas, oil

Discuss the causes and consequences of water scarcity.

• Water scarcity is caused by excessive rainfall and flooding

• The causes of water scarcity include climate change, over-extraction of groundwater, pollution, and inefficient water management. The consequences of water scarcity include reduced agricultural productivity, increased conflicts over water resources, and negative impacts on human health and ecosystems.

• Consequences of water scarcity include increased availability of clean drinking water

• Water scarcity is caused by efficient water management

How can individuals reduce their carbon footprint to combat climate change?

• By using energy-efficient appliances, driving less, using public transportation, reducing meat consumption, and supporting renewable energy.

• By using non-renewable energy sources

• By driving more frequently

• By increasing meat consumption

What are the benefits of reforestation in combating deforestation?

• Reforestation helps restore ecological balance, provide habitat for wildlife, improve air quality, reduce soil erosion, and mitigate climate change through carbon sequestration.

• Reforestation leads to increased deforestation

• Reforestation causes soil erosion

• Reforestation has no impact on air quality

Describe the concept of air pollution and its effects on the environment.

• Air pollution only affects humans and has no impact on wildlife

• Air pollution is beneficial for the environment as it helps plants grow faster

• Air pollution is the presence of harmful substances in the air, which can lead to smog formation, acid rain, damage to vegetation, and harm to wildlife.

• Air pollution has no connection to the formation of smog or acid rain

Explain the process of harnessing solar energy for electricity generation.

• Extracting solar energy from underground sources

• Burning fossil fuels to produce solar energy

• The process of harnessing solar energy for electricity generation involves using photovoltaic cells to convert sunlight into electricity.

• Using wind turbines to capture solar energy

What are some sustainable solutions to address water scarcity issues?

• Desalination of seawater

• Increased water pollution

• Deforestation

• Rainwater harvesting, water recycling and reuse, water-efficient technologies, water conservation practices, and water infrastructure improvements