Online Blended Learning Activity (chp 8)

What is the primary cause of climate change?

• Variations in Earth's orbit
• Changes in solar radiation
• Human activities releasing greenhouse gases
• Volcanic eruptions

What is the primary greenhouse gas responsible for climate change? (Select more than one)

• Oxygen
• Nitrogen
• Carbon dioxide
• Methane

Which human activity is the TWO largest contributor to greenhouse gas emissions? (Select more than one)

• Deforestation
• Agriculture
• Industrial processes
• Transportation

Which of the following is a major consequence of climate change?

• Increased biodiversity
• Reduced sea levels
• More frequent extreme weather events
• Cooling of the Earth's atmosphereAnswer

How does climate change affect food security?

• By increasing crop yields due to elevated levels of carbon dioxide
• By decreasing the availability of freshwater for irrigation
• By reducing the occurrence of extreme weather events
• By promoting the growth of resilient crop varietie

What is the main cause of the rising global average temperature over the past century?

• Solar activity
• Volcanic eruptions
• Human activities releasing greenhouse gases
• Natural variations in the Earth's climate

One of the strategy for oil spill cleanup method is by the deployment of containment boom, which can keep oil from spreading and suitable for calm water. The effectiveness will be decreased as the water increased

• TRUe
• FALSE

Which of the following is a long-term impact of oil spills on marine ecosystems?

• Increased fish population
• Accelerated coral growth
• Disruption of food chains
• Enhanced biodiversity

The following statement regarding on the EXXON VALDEZ oil spill disaster are true, EXCEPT;

• The incident happened when the tanker tried to avoid iceberg and hit a reef
• The spill polluted about 11,000 square miles and the oil slick extended to 470 miles southwest from Bligh Reef
• One of the possible cause by the third mate failed to properly maneuver the vessel due to fatigue and excessive work load
• Oil that penetrates deeply into the beaches does not remain and can deminished from the surface

What are dispersants used for in oil spill response?

• To absorb spilled oil from the water surface
• To break down oil into smaller droplets
• To physically contain and collect spilled oil
• To solidify oil for easier removal