Earth’s Atmosphere & Resources

Question 1

Greenhouse gases

Answer 1

Gases in the atmosphere, such as carbon dioxide (CO₂), methane (CH₄), and water vapour (H₂O), that trap heat from the Sun and contribute to global warming

Question 2

Carbon footprint

Answer 2

The total amount of greenhouse gases released into the atmosphere by a person, product, or activity over its lifetime

Question 3

Sustainability

Answer 3

Using resources in a way that meets the needs of people today without damaging the ability of future generations to meet their needs

Question 4

Potable water

Answer 4

Water that is safe to drink because it has low levels of dissolved salts and harmful microbes. It is not necessarily pure water (H₂O), but it is clean enough for humans to consume

Question 5

Life Cycle Assessment (LCA)

Answer 5

used to assess the environmental impact of a product at different stages of its life, including raw material extraction, manufacturing, use, and disposal