Which best explains why mammals became dominant after the mass extinction of the dinosaurs? A) They had traits that helped them adapt to environmental changes.
B
They were larger than dinosaurs and ate different foods.
They lived in different areas on Earth than dinosaurs.
D They were able to hibernate for thousands of years.
PLEASE HELP

Arock can be broken down into different kinds of substances by physical processes. no chemical reactions are needed to separate different parts of a rock into pure substances. this is because a rock is a(n)

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

Nan element’s square on the periodic table, the number with the greatest numerical value represents the