Question

how would a decrease in solar radiation affect earths climate? it would result in lower global temperatures and more ice cover. it would cause more frequent volcanic activity and eruptions. it would increase photosynthetic activity and oxygen levels. it would lead to higher global temperatures and less ice cover.

Explanation:

Solar radiation is a major source of Earth's heat. A decrease would mean less heat input, leading to lower global temperatures. Cooler temperatures would cause more water to freeze, increasing ice - cover. Volcanic activity is not directly related to solar radiation levels. Lower solar radiation would reduce photosynthetic activity as sunlight is crucial for photosynthesis, thus decreasing oxygen levels. Higher global temperatures and less ice - cover would result from an increase in solar radiation or other warming factors, not a decrease.

Answer:

It would result in lower global temperatures and more ice cover.