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Basically, the meteor caused there to be an increase of Carbon Dioxide, and less oxygen in the atmosphere :P I really hope this helps
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Answer:
Well, to start out, stars are reayling just huge balls of exploding gas. Constant fusion is always taking place benith their surfaces (not that they really have a solid surface). Stars tend to get bigger as they age, and darker two. Younger stars would ussually be smaller and more yellow than an older one. Older ones are bigger and have more of a redish color.
Shield this is the answer
Answer:
a. They must be present in a large geographic area.
Explanation:
Index fossils can be used to determine the age of a rock strata with great precision, but they must be scattered over a large geographic area to be able to be used reliable for this type of measurement. Index fossils typically indicate a certain type of paleoenvironment belonging to a very specific prehistoric period and their formation coincides with the age of the rock layer.
