Sperm is a part of the beginning of life.

The ovum is the beginning of life.

The problem came about suddenly.

A zygote is an early embryo formed by the union of a sperm and an egg from a male and a female.

The results of the exam are out.

Years of effort finally bore fruit.

This project aims for the combination of science and art.

He combined two ideas to create a new project.

A gap is created in the wall of the building due to the earthquake.

These experimental results support our hypothesis.