Number 1 is a phrase and number 2 is clause 3 is also a clause and A clause is a group of words that consists of a subject and a verb. ... A phrase is a group of words that does not consist of a subject and a verb.
Answer:
A. The troposphere
Explanation:
The troposphere is the lowest layer of Earth's atmosphere. Most of the mass (about 75-80%) of the atmosphere is in the troposphere. Most types of clouds are found in the troposphere, and almost all weather occurs within this layer. ... The bottom of the troposphere is at Earth's surface.