Explain the concept of relative dating

The age of the fossil must be determined so it can be compared to other fossil species from the same time period.

However, by itself a fossil has little meaning unless it is placed within some context.Most sediment is either laid down horizontally in bodies of water like the oceans, or on land on the margins of streams and rivers.Each time a new layer of sediment is deposited it is laid down horizontally on top of an older layer.The layers of rock at the base of the canyon were deposited first, and are thus older than the layers of rock exposed at the top (principle of superposition).In the Grand Canyon, the layers of strata are nearly horizontal.

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