Part of the sun's energy that reaches the earth's surface is absorbed by land and water as heat. the earth's surface then releases heat back to the atmosphere.

which of the following is true about this solar energy that is absorbed and released by earth's surface as heat?
a.
all of this heat escapes the earth's atmosphere, which keeps the planet cool.
b.
much of the heat is trapped at the top of earth's atmosphere to protect earth from ultraviolet radiation.
c.
all of this heat escapes the earth's atmosphere, which keeps the planet hot.
d.
much of the heat is trapped low in the atmosphere and is a major factor in determining earth's climate.

Aspecies has evolved an asexual mode of reproduction by having offspring develop from unfertilized eggs. which of the following will be true of this species' response to natural selection? there will be more deaths from natural selection because there is no mutation. there will be less genetic variation from recombination and a risk of not adapting quickly to environmental change. the species will increase in numbers because genetic variation is increased. the species will compensate for loss of genetic variation by hybridizing with other species. there will be fewer deaths from natural selection because sexual recombination always leads to extinction.