Question

If a large comet struck the Earth, I. large amount of molten rock would rain down on Earth and cause massive forest fires. II. the polar ice caps would melt. III. large amounts of radioactive material would cause the deaths of most animal life on the planet. IV. thick clouds of carbon dioxide would form and block out the sun for an extended period.

Answer 1

I. Large amount of molten rock would rain down on Earth and cause massive forest fires.

and

IV. Thick clouds of carbon dioxide would form and block out the sun for an extended period.