Question

according to some scientists, which is a cause of global warming?
decrease of nitrous oxide
increase in cloud cover
decrease of methane gas
increase in carbon dioxide

Explanation:

Carbon - dioxide is a major greenhouse gas. An increase in its concentration in the atmosphere traps more heat, leading to global warming. Decreases in nitrous oxide and methane would have a cooling effect, and an increase in cloud cover can have complex effects but is not a primary cause like increased CO₂.

Answer:

D. increase in carbon dioxide