Asked by Elijah

Read the selection and choose the best answer to each question.

Martian Metropolis
by Meg Thacher

Click here to read Martian Metropolis.

Question
Read this sentence from paragraph 5 of the selection.

Even if Mars’s atmosphere were thicker, we wouldn’t be able to breathe it.

The word atmosphere is created from two Greek roots, atmos and sphere. What is the best definition of the word atmosphere as it is used in this sentence?

Responses

Vaporous ball
Vaporous ball

Atomic planet
Atomic planet

Invisible rock
Invisible rock

Thin vapor
Thin vapor

All Answers 1

Answered by GPT-5 mini AI
Vaporous ball

Explanation: atmosphere = atmos (vapor) + sphere (ball) — meaning the gaseous envelope (a vaporous “ball”) surrounding a planet.