No, you don’t, unless using the names as formal labels. They are scientific names, but not considered proper nouns.
We live in the troposphere. The troposphere is under the stratosphere.
The troposphere is the lowest layer of the atmosphere.
Not unless it's the first word of a sentence. It is a common noun.
It does not need to be unless at the start of a sentence. In American English however, there is a bad tendency to capitalize.
troposhere is the lowest part of the atmosphere sincerely;coup
No. The separate levels of the atmosphere are not capitalized.
Should breakfast be capitalized in a sentence
No, "transition process" should not be capitalized in a sentence unless it is the first word in the sentence or part of a title.
No, the word forecast should not be capitalized in a sentence.
Yes it should be capitalized.
Yes it should be capitalized.
Have should be capitalized if it is the beginning of a sentence. Summer should not be capitalized.
No it shouldn't be capitalized.
No it shouldn't be capitalized.
No, "methadone" should not be capitalized unless it is at the beginning of a sentence or part of a proper noun (such as a specific brand name).
No, the word "mammogram" should not be capitalized within a sentence unless it is at the beginning of a sentence or part of a title.
"Indian" should be capitalized but "leaders" shouldn't be. The specific names of the leaders should be capitalized.