Question

answer and l will give you points but give the correct answer​

Answer 1

Explanation:

16) why are liquids used in a thermometer?

ans: because it has high coefficient of expansion.

17)what is salt? give examples

ans: NaCI, NH4F, MgCO3, and Fe2(HPO4)3

18)Define symbiosis. explain with examples.

ans : symbiosis is relationship between two organisms to benefit each other.

examples:- LICHEN. they are the colony of fungi and AlGAE

Answer 2

Answer:

16) mercury

17) sedimentation of sea water