Pangaea means the continents once fit together like a puzzle to form one big continent
Antarctica has no permanent residents because the weather is too cold to be sustainable, there's no constant source of food, and there are many predatory organisms residing there.
if this helped please give brainliest!
Tourism is the biggest single industry in the world
Rachel Carson is credited with major reformation in pesticide policies <span>w/ environmental awareness, and creation of EPA.
hope this helps!</span>
