How is our atmosphere different from the atmospheres on Venus and Mars?

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Solution

The differences between the atmospheres of Earth, Venus, and Mars are:
Atmosphere of Earth
Atmosphere of Venus
Atmosphere of Mars
1. The atmosphere of Earth is denser than that of Mars but rarer than that of Venus. The atmospheric pressure of Earth is approximately $14 t i m e s$ than that of Mars. 1. The atmosphere of Venus is denser than that of Earth. Also, the temperature is very high due to greenhouse effect and closeness to Sun. 1. The density atmosphere of Mars is very low when compared to Earth and Venus. Also, the atmospheric pressure exerted is very low.
2. Atmospheric thickness is $120 k m s$ . 2. Atmospheric thickness is $250 k m s$ . 2. Atmospheric thickness is $230 k m s$ .
3. The atmosphere is mainly comprised of nitrogen $(78 %)$ and oxygen $(21 %)$ . 3. The atmosphere is mainly comprised of carbon dioxide $(96.5 %)$ and nitrogen $(3.5 %)$ . 3. The atmosphere is mainly comprised of carbon dioxide $(95 %)$ and nitrogen $(2.8 %)$
4. Total mass of Earth's atmosphere is $5.15 \times 10^{18} k g$ . 4. Total mass of Venus's atmosphere is $4.8 \times 10^{20} k g$ . 4. Total mass of Mars's atmosphere is $2.5 \times 10^{16} k g$ .

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Atmosphere of Earth	Atmosphere of Venus	Atmosphere of Mars
1. The atmosphere of Earth is denser than that of Mars but rarer than that of Venus. The atmospheric pressure of Earth is approximately $14 t i m e s$ than that of Mars.	1. The atmosphere of Venus is denser than that of Earth. Also, the temperature is very high due to greenhouse effect and closeness to Sun.	1. The density atmosphere of Mars is very low when compared to Earth and Venus. Also, the atmospheric pressure exerted is very low.
2. Atmospheric thickness is $120 k m s$ .	2. Atmospheric thickness is $250 k m s$ .	2. Atmospheric thickness is $230 k m s$ .
3. The atmosphere is mainly comprised of nitrogen $(78 %)$ and oxygen $(21 %)$ .	3. The atmosphere is mainly comprised of carbon dioxide $(96.5 %)$ and nitrogen $(3.5 %)$ .	3. The atmosphere is mainly comprised of carbon dioxide $(95 %)$ and nitrogen $(2.8 %)$
4. Total mass of Earth's atmosphere is $5.15 \times 10^{18} k g$ .	4. Total mass of Venus's atmosphere is $4.8 \times 10^{20} k g$ .	4. Total mass of Mars's atmosphere is $2.5 \times 10^{16} k g$ .