Question

Exercises
I.Tick the correct option.

1. Which of these sentences is not true for minerals?
They are natural substances
They are formed of crystals
They are made from living things like plants
they are in solid state


2. Which of these is not true for gemstones?
They are pure minerals
They are precious
They are part of rocks
They are expensive​

Answer 1

Answer:

1.they are in solid state, 2. they are pure minerals