Practice check: Which option correctly answers: which gas is a major component of the natural greenhouse effect and also rises due to human activities?

✅ D. Maintaining plant cover and reducing erosion

a: Burning topsoil | b: Overgrazing slopes | c: Removing all vegetation | d: Maintaining plant cover and reducing erosion Read more

✅ B. Ocean absorption of excess atmospheric carbon dioxide

a: Extra oxygen dissolving | b: Ocean absorption of excess atmospheric carbon dioxide | c: Sand movement only | d: Moonlight Read more

✅ B. Solar energy

a: Coal | b: Solar energy | c: Natural gas | d: Petroleum Read more

✅ C. 3

✅ C. 7

a: 1 | b: 14 | c: 7 | d: 4 Read more

✅ A. Carbon monoxide

✅ B. The Sun

a: Polaris | b: The Sun | c: Sirius | d: Proxima Centauri Read more

✅ D. Carbon dioxide

a: Neon | b: Argon | c: Helium | d: Carbon dioxide Read more