The only substance that exists in the atmosphere as a solid, liquid, and gas is

A. glucose.
B. water.
C. oxygen.
D. nitrogen.

My answer is b.

I agree.

Great! Your answer, B) water, is correct.

Water is the only substance that exists naturally in all three states of matter (solid, liquid, and gas) within the Earth's atmosphere. Water vapor is the gaseous state of water in the atmosphere, while liquid water can be found in clouds, rain, and bodies of water. Additionally, solid water, known as ice, can be found in the form of snow, hail, and ice crystals in the atmosphere. The ability of water to exist in all three states is an essential part of the Earth's water cycle and weather patterns.