Question

During the K-Pg mass extinction event, soot and ash were thrown into the atmosphere, darkening the sky for months. Some mammals were able to survive and proliferate. Which factor contributed to this success?(1 point)ResponsesThe ability to regulate their body temperatures in the face of reduced sunlight and colder temperatures.The ability to regulate their body temperatures in the face of reduced sunlight and colder temperatures.A decrease in oceanic and lake habitat, leading to marine mammal evolution.A decrease in oceanic and lake habitat, leading to marine mammal evolution.There were new predators because the dinosaurs were instantly killed.There were new predators because the dinosaurs were instantly killed.Many mammals developed the ability to fly, allowing them to escape the impact site.Many mammals developed the ability to fly, allowing them to escape the impact site.

Answer 1

The ability to regulate their body temperatures in the face of reduced sunlight and colder temperatures.

Endothermy (and insulating fur), small-bodied habits (burrowing, nocturnal, generalist diets) let many mammals remain active and survive the dark, cold conditions after the impact.