Fossils are the most reliable source of information regarding the evolution of life on Earth. Fossils also provide information on major geological events and previous climates. The age of rock layers can be determined using index fossils.
Gravity and earths rotation
A) A source is where a river or stream originates and a mouth is where it empties into another body of water.
Answer:
Each branch has a different set of responsibilities and powers to make sure that each branch doesn't overpower over another. One of the branches of government is the executive branch.
Explanation:
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