EARTH SCIENCE
GEOBIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They had traits that helped them adapt to environmental changes.
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They were larger than dinosaurs and ate different foods.
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They lived in different areas on Earth than dinosaurs.
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They were able to hibernate for thousands of years.
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Detailed explanation-1: -Which best explains why mammals became dominant after the mass extinction of the dinosaurs? They had traits that helped them adapt to environmental changes.
Detailed explanation-2: -“When the dinosaurs went extinct, access to different foods and environments enabled mammals to flourish and diversify rapidly in their tooth anatomy and evolve larger body size, ” said lead author Madelaine Atteberry from the University of Colorado Geological Sciences Department.
Detailed explanation-3: -When non-avian dinosaurs died out 66 million years ago, mammals persisted. But a new study shows that this group didn’t go unchanged: in the first 10 million years following the mass extinction event, mammals bulked up, rather than evolving bigger brains, to adapt to the dramatic changes in the world around them.
Detailed explanation-4: -Around 66 million years ago, at the end of the Cretaceous period, an asteroid struck the Earth, triggering a mass extinction that killed off the dinosaurs and some 75% of all species. Somehow mammals survived, thrived, and became dominant across the planet.
Detailed explanation-5: -Adaptive Radiation After a mass extinction, many habitats are no longer inhabited by organisms because they have gone extinct. With new habitats available, some species will adapt to the new environments.