<span>Why is carbon so abundant in living things when oxygen is the most abundant element on Earth?
</span>a. Carbon atoms can bond with one another to make chains and cyclic structures whereas oxygen atoms cannot form chains or cyclic structures.<span>
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<span>Compact bone is the external or outer layer of a bone that gives bone tissue a "hard-like" feel, while a spongy bone is the inner bone. Spongy bone is porous and sits underneath the compact bone. If spongy bone does not receive ample calcium nutrients, it is most vulnerable to breakage.
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One animal that has greatly benefited form natural selection is the giraffe. It's neck has grew longer and longer so that they can reach the leaves on the top of trees.
False, because they have different masses. The ball with then heavier mass will land first. The ball with the lighter mass will land second.
