The most ancient branch point in animal phylogeny is that between having

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.

i was thinking 4.0 v hope this

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.