A single living thing that can breed/produce fertile offspring

A species is often defined as a group of organisms that can reproduce naturally with one another and create fertile offspring.

Explanation:

if this helps brainliest ?

mammals

A species is often defined as a group of organisms that can reproduce naturally with one another and create fertile offspring. However, the classification of a species can be difficult—even riddled with controversy.

Lipids are nonpolar molecules, which means their ends are not charged. Because they are nonpolar and water is polar, lipids are not soluble in water. That means the lipid molecules and water molecules do not bond or share electrons in any way. The lipids just float in the water without blending into it.

Explanation: