Venus is similar in size and similar in composition of Earth. Venus also has volcanoes and has craters.
Mars has a red surface because of rust. Mars also has huge volcanoes,cannons and dry lake beds..
The gravity on Venus is about 91% of Earth's gravity. So objects would feal slightly lighter.
The gravity on Mars is only 38% of Earth's gravity. That means objects would feal much lighter than they are on Earth.
The atmosphere of Venus is made up of very dense carbon dioxide. Venus also has sulfuric acid clouds.
The atmosphere of Mars is mostly carbon dioxide but also has trace of oxygen and water vapor. The atmosphere is also much thinner than Earth's.
Physical features of both planets
Venus would be more dangerous for us because the pressure and heat is so high it would crush and burn us all. Also the atmosphere is harder to work with because it is completely toxic to humans.
Gravity of both planets
Mars would be safer than Venus because it already has possible life on it. There are dry lake beds which shows the possibility of water. Also Mars atmosphere is a lot safer than Venus's and a much easier atmosphere to make livable than Venus's. That is why Mars is a better option to live on. Now I advise everybody to pack their bags and get on a rocket very soon.
Atmosphere of both planets
Why Venus is unsafe
Why Mars is a better option
The rocket landed on Mars safely and everyone lived happily ever after.