Answer:
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Answer:
D. Fossils of the Cambrian Period
Explanation:
The Cambrian Period (541–485.4 million years) is the period known for the explosion of life on Earth, when all the major phyla of multicellular organisms originated, and almost all the groups we find today, in a period of time geologically short.
The primitive faunas of this period had numerous morphological patterns, an immense variety of species, mostly soft-bodied animals, and new ecological strategies such as predation, burying themselves deep in the sediment and building complex, branched tunnels. They also featured some relatively large skeletal animals, such as trilobites, brachiopods, and
I believe it is the third choice, there was nothing then a sudden explosion, creating the universe
The correct answer is - climate change.
The gigantic meteorite that stuck the Earth caused a lot of damage directly, and the impact itself killed a lot of dinosaurs, but what led to the extinctions of them was the drastic change in the climate and in general of the lower atmosphere.
Because of the impact, as well as all the volcanic activity that was triggered of it, enormous amounts of dust and ashes were released into the atmosphere. The whole planet was covered by this dust and ashes, which led to prolonged period of very cold weather, toxic atmosphere (except for the part of it just over half a meter of the ground), and acid rains. Because of the short period in which all this happened, the dinosaurs where not able to adapt and they died off.
