Ahydrogen atom that los s its electron and becomes positively charged is called a(n)

hydrogen ion

Explanation:

A hydrogen ion is created when a hydrogen atom loses or gains an electron. A positively charged hydrogen ion (or proton) can readily combine with other particles and therefore is only seen isolated when it is in a gaseous state or a nearly particle-free space.

as resources become scarce because of population growth, the growth decreases after few years due to lack of resources and food.