Question

imagine a future earth with fewer polar ice caps and large ice sheets due to melting. this would likely result in which of these scenarios?
a decrease in earth’s albedo and potential warming
no change in earth’s overall albedo or temperature
an increase in earth’s albedo and potential cooling
a decrease in earth’s temperature leading to a new ice age

Explanation:

Albedo is the reflectivity of a surface. Ice has high albedo (reflects much solar radiation). Melting ice reduces ice cover, replacing it with water/land (lower albedo). Lower albedo means more solar energy is absorbed, leading to warming. The other options are incorrect: no change in albedo/temp is wrong (ice loss changes albedo), increased albedo and cooling is opposite (less ice means less reflection, more heating), and a new ice age from cooling contradicts the energy absorption from lower albedo.

Answer:

a decrease in Earth’s albedo and potential warming