Noah wants to show the largest source of carbon on earth for his school project. according to his research, in which form is most of the carbon on earth stored?

Most of the carbon on Earth stored in rocks and sediments.

Most of the carbon on Earth stored in rocks and sediments while the remaining carbon is located in the atmosphere, ocean, and in the body of living organisms. The carbon moves from the atmosphere to the land and from the land to the atmosphere due to the continuous absorption and release of carbon by living organisms as well as the burning of fossil fuels such as petrol, coal and natural gas etc. so we can conclude that most of the carbon is present in the rocks.

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the reason the two sea urchins don't compete with each other for food, resources, etc. is because the urchins have adapted to the environment but they have also adapted to each other. this is most likely because the genes of the sea urchins.

the answer to your question is sperm