B.
Is completely reflected by the atmosphere
Explanation:Intense heat and pressure in the Sun's core cause protons to fuse together to form helium atoms, a process that releases large amounts of energy. This nuclear reaction—the same process that takes place in a hydrogen bomb—has powered the Sun for more than 4 billion years.
B
Explanation:
In total, the atmosphere and the Earth's surface absorb approximately 70% of incoming radiation, while the remaining 30% is reflected back to space and does not heat the surface. Because it is colder, the Earth radiates energy at much longer wavelengths than the Sun.
