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)
Responses

A decrease in oceanic and lake habitat, leading to marine mammal evolution.
A decrease in oceanic and lake habitat, leading to marine mammal evolution.

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.

The 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.

There were new predators because the dinosaurs were instantly killed.

Answer 1

The factor that contributed to the success of some mammals during the K-Pg mass extinction event was:

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

Mammals are generally better at maintaining their body temperature, which would have helped them survive in the cooler, darker conditions following the impact event.