Are all functions cared out by other cells

In a sense, all functions are technically carried out by other cells. our whole bodies are composed of cells. Groups of cells make tissues, groups of tissues make organs, and groups of organs makes an organism. So, technically, yes.

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.

a lot of people sadly don't know the best way to learn is cheating off of your friends or this amazing thing called google