Greenhouse Gases and Climate Change

The video explores the concept of climate change, focusing on the role of greenhouse gases in global warming. It discusses human contributions to increased greenhouse gas levels, particularly since the Industrial Revolution, and examines historical data linking these gases to rising global temperatures. The video also highlights the impact of climate change on aquatic ecosystems, such as ocean acidification, and addresses common counterarguments to climate change science.

What is the main focus of the IB biology 4.4 curriculum as mentioned in the video?

• Photosynthesis and plant biology

• Global warming and climate change

• Genetics and evolution

• Human anatomy and physiology

Which of the following is a characteristic of greenhouse gases?

• They reflect sunlight away from Earth

• They cool down the Earth's surface

• They absorb heat and trap it in the atmosphere

• They are only produced by human activities

Which gas is mentioned as having a larger total effect on global warming due to its high concentration?

• Ozone

• Nitrous oxide

• Methane

• Carbon dioxide

What is the term used to describe the effect of a greenhouse gas based on its concentration and heat absorption ability?

• Greenhouse effect

• Global warming potential

• Climate change index

• Atmospheric impact factor

What historical event is linked to the increase in greenhouse gases?

• The Industrial Revolution

• The Digital Age

• World War II

• The Renaissance

What is the relationship between greenhouse gases and global temperatures?

• Higher greenhouse gases correlate with higher temperatures

• There is no relationship

• Greenhouse gases only affect local climates

• Higher greenhouse gases lead to lower temperatures

What is the effect of increased atmospheric CO2 on oceans?

• It raises ocean temperatures

• It makes oceans more alkaline

• It increases ocean salinity

• It causes ocean acidification

How does ocean acidification affect marine life?

• It enhances coral growth

• It decreases calcium carbonate availability

• It has no effect on marine life

• It increases fish populations

What is a common argument against human-caused climate change?

• Climate change is a recent phenomenon

• Earth's climate has always been stable

• Climate change is a natural cycle

• Humans have no impact on the environment

What is the counterargument to the claim that climate change is a natural cycle?

• Natural cycles have stopped occurring

• Natural cycles are slower than current changes

• There is no data on past climate cycles

• Current changes are due to solar activity