Which statements explain what happens at deep-ocean trenches? Select two options.

Crust is formed.
Mountains are formed.
Seafloor spreading occurs.
Crust becomes molten rock.
Denser plates slide under lighter plates.

80 pts the type of cloud shown here may produce heavy rainfall. this type of cloud most likely occurs in an area of the sub-saharan that is a) often dry. b) often wet. c) very windy. d) usually cool.

Natalie had random hand movements when she was two months old. when she was six months old, she used to grab a block with her whole hand. now at the age of ten months, she can grasp the same block with her thumb and forefinger. this sequence of growth in her hand and finger movements is according to the pattern.

How do you date a sample of rock that you suspect as being one of the earliest on earth