When we analyze whether a world is a possible home to life, the key thing we look for is .
A)the presence of organic molecules such as amino acids
B)the past or present existence of liquid water
C)surface coloration changes that could indicate vegetative growth
D)evidence of atmospheric oxygen

Question

Quizplus · Accepted Answer

Liquid water is essential for life as we know it, so the presence of past or present liquid water on a world is a crucial factor in determining its potential habitability. While organic molecules and evidence of atmospheric oxygen may suggest the presence of life, they are not necessarily a requirement for a world to be habitable. Surface coloration changes may indicate life, but not all forms of life exhibit such changes.

When We Analyze Whether a World Is a Possible Home