Multiple choice

What has been found on the Mars soil, which makes it inhospitable for life forms?

  1. Perchlorate

  2. Mangenese

  3. Radium

  4. Actinium

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Perchlorates are chemical compounds found in Martian soil that are considered toxic to many life forms, posing a challenge for potential colonization.