In the following sentence, which word is the adverb?

by the time we got to school, the bell had already rung.

i guess the cause and effect would show how being around the smoke(the cause) can have negative effects on the body.

explanation:

the statement that best explains why the tenth amendment reserves some rights and powers to states is that the framers believed in the principle of federalism. this principle says that some powers are in the hands of a centralized national government, while others are reserved for the governments of several states.