Venus has about the same mass as earth and is about the same distance from the sun. yet venus does not support life. an important difference between earth and venus is that venus lacks a) an atmosphere. b) gravity and water. c) a similar chemical composition. d) water and moderate temperatures.

The correct answer is: (A) An Atmosphere

Explanation:
The atmosphere of Venus is almost ninety times denser than that of Earth. Due to Venus' denser atmosphere and chemical composition (as its atmosphere comprises of over 96% of Carbon dioxide), it experience an immense greenhouse effect. That is why its surface temperature remains higher than 470°. At that very high temperature, it is impossible to have life on the surface of Venus.