Question

Which two sentences best explain the central ideas of the passage?

Answer 1

"Research suggests that Mars has some features that would support life, but most conditions are too harsh for it." is definitely a main idea as for the second one your best bet is to talk about possible life on mars in the future so that 4th sentence is going to be your friend.

Answer 2

Answer:

1. Research suggests that Mars has some features that would support life, but most conditions are too harsh for it.

2. Researchers will seek out water sources in their search for signs of life on Mars.

Explanation:

i did it on study island and got it right!!!!! good luck, hope this helps :-D