3characteristics of carbon that allow it to be considered the backbone

The carbon has 4 valence electrons ( can have four bonds ) that allow it to form bonds and takes 4 hydrogen atoms to become saturated. I cannot come up with a 3rd characteristic

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds