Comparing the clouds of Earth and Venus, we find that:

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Unlike Earth, Venus has a much higher troposphere where the clouds are located, with its clouds about 40 kilometers high. Our clouds are made chiefly of water vapor, while Venus' clouds are made chiefly of sulfuric acid. Additionally, Venus has a higher troposphere, with its clouds about 40 kilometers high compared to our troposphere, which extends only 10 kilometers high. While both Earth and Venus have rotation periods longer than their day-night cycles, the rotation of Venus' atmosphere is much slower than the rotation of its solid surface. Dry ice clouds do exist on Mars, but not on Venus. Finally, Venus is not too hot for clouds to form, and telescopically we can see its thick cloud cover.

Comparing the Clouds of Earth and Venus, We Find That