They're both where plates meet up.
<span>It used renewable resources.
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It's being estimated that dinosaurs lived on Earth from about 237 million years ago to about 66 million years ago. So answers B and D are definately too "old", while answer A is too "young". I'd pick answer C as it's most probable.
Earth's gravity pulls matter downward, toward its center. It pulls precipitation down from clouds and pulls water downhill.
