Which of the following best explains the law of superposition?
a) in rock layers, the oldest layers are at the bottom and the youngest are at the top
b) in rock layers, the youngest layers are at the bottom and the oldest are at the top
c) due to weathering and erosion, we cannot determine the relative age of rock layers

Calculate the molarity of the solution. 6.02 x 1022 molecules of hci (molecular weight = 36.5 g/mole) in 2.0 liters of water m

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.