Question

Scientists are currently trying to look for evidence of life on other planets, specifically Mars. One sign of life (like our own) is the presence of water. What elements would you look for on Mars to see if we, as humans, could ultimately survive there?

Choose one or more:

A.oxygen

B.carbon

C.hydrogen

D.calcium

E.nitrogen

Answer 1

Answer: the correct options are A(oxygen) and E ( Nitrogen).

Explanation: As humans we are able to survive in the planet earth due to its atmospheric composition. The Earth's atmosphere is composed of

Nitrogen(78%) and oxygen (21%). Currently, scientist from NASA has discovered existence of water in Mars. The elements they would look out for on Mars to see if we, as humans, could ultimately survive there is Nitrogen and oxygen.