The male and female gamete each contribute a
of the zygote's DNA material.

Explanation:

Half. Each gamete provides one set of chromosomes, or DNA material. All zygotes have 2 sets of chromosomes, one-half from the mother's gamete (egg) and one-half from the father's gamete (sperm).

because health skills are tools and strategies and also practical skills are also something you need to learn (like tools and strategies) and put it in reality.