Answer:
A
Explanation: ACCORDING TO LAW OF REFLECTION ANGLE OF INCIDENCE WITH NORMAL TO SURFACE MUST BE EQUAL TO ANGLE OF REFLECTION WITH NORMAL TO SURFACE
Pure substance has a definite and constant composition-like salt or sugar. A pure substance can be either an element or a compound, but the composition of a pure substance doesn’t vary.
Mixtures are physical combinations of pure substances that have no definite or constant composition — the composition of a mixture varies according to who prepares the mixture.
Answer; they are larger and made of rocky material
Answer:
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