B)freezing
C)melting
D)boiling
At point B, the substance undergoes deposition, transitioning directly from a gas phase to a solid phase. The correct option is a.
At point B on the phase diagram, the phase transition occurring is deposition. Deposition is a physical process in which a substance transitions directly from a gas phase to a solid phase without passing through the liquid phase. This change is driven by a decrease in temperature or an increase in pressure.
During deposition, gas particles lose energy, causing them to slow down and come together to form a solid structure. This process is exemplified in nature when water vapor in the atmosphere turns directly into frost or ice crystals on a cold surface. Deposition is the opposite of sublimation, where a substance transitions from a solid to a gas without becoming a liquid.
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Answer:
C. melting
option C is correct answer.
Your answer should be Cold Blooded Animals. Cold blooded animals don't have control over their own body temperature like humans or mammals do, most times cold blooded animals are reptiles, amphibians, etc. so they have to lay on rocks or someplace in the sunlight to warm up and have to go to water or shady areas to cool off. Hope this helps! =^-^=