We are looking for a new supplier.

We need to find a new source of supply.

This plan is proceeding perfectly without any excess or deficiency.

In math class, I learned about deficient numbers.

He fell ill due to long-term malnutrition.

Recently, I've been feeling heavy-headed due to lack of sleep.

The nucleolus, which is part of the cell nucleus, plays an important role in the production of ribosomes.

His research focuses on the relationship between specific diseases and karyotypes.

The inner core of the Earth is mainly composed of iron and nickel.

He warned about the dangers of nuclear warheads.