B. Ozone collects
C. Evaporation occurs
D.winds form
Condensation nuclei are small particles in the atmosphere where water vapor condenses to form cloud droplets, making option A the correct answer. They are essential for cloud formation.
Condensation nuclei refer to small particles typically present in the atmosphere, on which water vapor can condense to form cloud droplets.
This means option A is the correct answer.
These nuclei can be composed of various substances like dust, volcanic ash, sea salt, etc. They are crucial for cloud formation, and without them, water vapor would need to supercool to a very low temperature before it could form droplets.
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B. lunar breccias.
C. silicates.
D. highlands.
Explanation:
mass - 2kg
energy - 16 j
2
k.e- 1/2mv
2
16j=1/2×2×v
2
16×2/2=v
2
16=v
√16=v
V=4m/s
then momentum =mv
= 2×4
= 8 kgm/s