How does the proportion of carbon dioxide in the atmosphere differ between Earth and Venus?

Question

Venus's atmosphere has a higher proportion of carbon dioxide than Earth's, so greenhouse gasses trap more heat.
Venus's atmosphere has a higher proportion of carbon dioxide than Earth's, so greenhouse gasses trap more heat.

Venus's atmosphere has a higher proportion of carbon dioxide than Earth's, so greenhouse gasses trap less heat.
Venus's atmosphere has a higher proportion of carbon dioxide than Earth's, so greenhouse gasses trap less heat.

Venus's atmosphere has a lower proportion of carbon dioxide than Earth's, so greenhouse gasses trap less heat.
Venus's atmosphere has a lower proportion of carbon dioxide than Earth's, so greenhouse gasses trap less heat.

Venus's atmosphere has a lower proportion of carbon dioxide than Earth's, so greenhouse gasses trap more heat.

Answer 1

The correct statement regarding the atmosphere of Venus in comparison to Earth's is:

Venus's atmosphere has a higher proportion of carbon dioxide than Earth's, so greenhouse gases trap more heat.

To elaborate, Venus's atmosphere consists of about 96.5% carbon dioxide, whereas Earth's atmosphere contains only about 0.04% carbon dioxide. This significant difference in carbon dioxide concentration contributes to Venus's extreme greenhouse effect, leading to surface temperatures that are drastically higher than those on Earth.