By colliding they push the ground up as they collide causing mountain ranges so when they collide
A heterogeneous mixture composes of non- uniform components, so the concrete would be the answer, because you can tell the components from one another.
The answer for this is "All of above"
Explanation:
Cave lions, sabre-toothed cats, cave bears, giant deer, woolly rhinoceroses, and woolly mammoths were prevailing species of the Quaternary period. Without the dinosaurs, plant life had an opportunity to flourish during the Cenozoic era.
