Select the correct answer. In this drawing, which layer of rock is the oldest?

A.
layer 1
B.
layer 2
C.
layer 5
D.
layer 6

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution