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gavmur [86]
3 years ago
7

4. What was the most significant geologic event of the Mesozoic?

Biology
1 answer:
Ierofanga [76]3 years ago
7 0
Should be “Mass Extinction”. Since that’s when an asteroid hit the earth and caused extreme amounts of species to die off, such as the dinosaurs.
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The image shows rock strata from three different regions on Earth. Identify all the layers that contain an index fossil
FrozenT [24]

The correct answer is: Layer 1, layer 2, and layer 4 in all three regions.

The index fossils are fossils that are commonly used for identifying a geological period of time, and these fossils are also very wide spread, as well as having a rapid evolutionary trends.

By this picture, we can easily see that even though we have rock strata from different regions, the same layers contain the same fossil, and it is a fossil that also is rapidly evolving so has a minor change in each layer.

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<h3>♫ - - - - - - - - - - - - - - - ~<u>Hello There</u>!~ - - - - - - - - - - - - - - - ♫</h3>

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8 0
2 years ago
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Which of the following denotes the divisions of the geologic time scale in correct order of decreasing lengths of time beginning
Stels [109]

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The geological time scale has been made so that the scientists can have a practical system about the classification of geological time, thus everything that has happened throughout it. The geological time unites have been defined in accordance with important events that have happened, thus marking their end or beginning. These events can be mass extinctions, catastrophes, climate patterns, domination of certain species etc. The longest of these time units is the eon, lasting for more than half a billion years, and up to 2 billion years. The era comes as the second longest time unit, lasting for several hundred million years. The period lasts for several tens of million years, and the epoch is the smallest unit, lasting for few million years, or several hundred thousand years.

3 0
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lack of resources, and mating

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they may go ictenct

7 0
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