Which option names two processes that must occur to form soil?

The model illustrates a process by which a substance is taken up by a cell

Sarah is sitting at the top of the slide in the schools playground. which will increase sarah’s kinetic energy a- an additional child is added to the top of the slide. b- sarah is pushed and moves down the slide. c- sarah climbs down the ladder and off the slide. d- the ladder is moved to the other side of the yard.

What is thought to have caused the mass extinction at the end of the cretaceous period?