Which stage comes earlier in the development of a human baby from zygote : foetus or embryo ?

Explanation

To answer the question "Which stage comes earlier in the development of a human baby from zygote: foetus or embryo?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Gametes**: The process of human reproduction starts with the male and female gametes. The male gamete is the sperm, and the female gamete is the ovum (egg).

**Hint**: Remember that gametes are the reproductive cells that combine during fertilization.

...