2.   The Moon is made up of minerals similar to those on Earth, which are 

A. rilles.
B. lunar breccias.
C. silicates.
D. highlands.

I am thinking either B or D?

Your two guesses are wrong.

That leaves you two choices. Please do not post this again. You've used up your two guesses.

3.   An explosion that destroys the outer portion of a star is known as a 

A. supergiant.
B. protostar.
C. nebula.
D. supernova.

D?

Ms.Sue is it possible if you give me a website for number two or no?

Oh its silicates just found the answer in my book must of missed a page!

I didn't find a good website for question 3. Check your book.

Is #3 correct?

The correct answers are as follows:

3. An explosion that destroys the outer portion of a star is known as a

D. supernova.

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2. The Moon is made up of minerals similar to those on Earth, which are

C. silicates.