Which of the following is true of the composition of all materials? A.
All materials are made up of large parts that can only be seen by the human eye.
B.
All materials are made up of smaller parts that cannot be seen without magnification.
C.
All materials are made up of living cells.
D.
All materials are made up of only one part.

Option B.

Explanation:

All materials are made up of smaller parts that cannot be seen without magnification.

i think it's B

Explanation:

my bad if u get it wrong or anything

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate

answer///(c) the maximum number of organisms an environment can support for a long time; i believe this is correct, plz check luck;