Answer:
Minerals are classified by key chemical constituents; the two dominant systems are the Dana classification and the Strunz classification. Silicate minerals comprise approximately 90% of the Earth's crust.
Explanation:
Hope this helps! Brainliest please?
They ran up the hill in the heavy rain. let's label the parts oof the sentence
They-subject
ran-verb
ran up the hill-predicate
So they is being used as the subject
<span>Charlie is overcome by a sequence of flashbacks to occurences from his youth. These flashbacks are stimulated by experiences in the present: when Charlie is propositioned by the pregnant woman in Central Park, for example, he recalls his mother’s pregnancy with his sister. All of Charlie’s memories come in the form of such revelations and recall events of which he was not previously aware. These new memories hold new lessons for Charlie about his past and shed new light on his present neuroses. </span>