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Diversification of animal phyla occurred during the Cambrian explosion around 541 million years ago. This event marked a rapid increase in the variety of body plans and structures within the animal kingdom.
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The modern-day mammal, specifically the placental mammals, did not live during the time of the dinosaurs. While some early mammals existed during the Mesozoic Era, they were small and not the diverse group we see today. The major diversification of placental mammals occurred after the dinosaurs went extinct around 66 million years ago. Thus, many of the mammals we are familiar with today emerged long after the age of dinosaurs had ended.
No, the Cambrian explosion was not a volcanic eruption. It was a period of rapid diversification of multicellular lifeforms that occurred around 541 million years ago, marking the beginning of the Paleozoic era.
The appearance of the most complex and the greatest diversity of organisms on Earth occurred during the Cambrian Period, around 541 million years ago. This period is known as the "Cambrian Explosion" due to the rapid diversification of multicellular life forms.
The Cambrian period was part of the Paleozoic era. It occurred roughly 541 to 485 million years ago and is known for the rapid diversification of multicellular life forms, often referred to as the "Cambrian explosion."
The text structure used in the excerpt from a freshman's diary is likely a chronological structure, where events are presented in the order in which they occurred, often following a timeline format.
The gradual changes that have occurred in the Earth's structure over the past 4.5-5 billion years are collectively referred to as geological processes. These processes include plate tectonics, erosion, and volcanic activity, which have shaped the planet's surface and continue to influence its structure.
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The Cambrian Explosion wasn't a literal explosion. Instead, it was a span of time when organisms evolved into an immense number of new forms, and biodiversity increased greatly, reaching its modern level. The Cambrian Explosion occurred between 530 and 450 million years ago.
The Triassic Period is a geological time period that occurred from about 251 to 201 million years ago. It followed the Permian Period and preceded the Jurassic Period in the Mesozoic Era. The Triassic Period saw the diversification of early reptiles and the rise of dinosaurs.
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