Answer: A warm front forms when a warm air mass pushes into a cooler air mass, also shown in the image. Warm fronts often bring stormy weather as the warm air mass at the surface rises above the cool air mass, making clouds and storms.
Whelp, it is definitely not D.
I would say B.
there was no Paleogene period.
I think it is Ag and Au but not two sure
Sleeping on the stomach is "prone," on the back its "supine."