a is a substance that comes out of solution when 2 clear liquids are mixed which is a sign of a change.

precipitate , chemical

Explanation:

a precipitate is is an insoluble solid that forms when two solutions are combined and react chemically. The two clear colorless liquids is a chemical change because a different solid substance is formed

the child will have heterozygous dominant chromosomes as characters of his father are dominant over the characters of his mother.

the child is heterozygous

answer; natural resources;