The law of superposition states that layers of sedimentary rock are a. ordered in a random fashion, with the age of the rock varying wildly from one layer to the next. b. ordered in a time sequence, with the oldest layers on the bottom and the youngest on top. c. ordered in a repeating pattern, with every third layer being identical. d. ordered according to the age of the volcano that created the layer.

B. ordered in a time sequence, with the oldest layers on the bottom and the youngest on top.

Explanation:

This is the right description of the way in which sedimentary rock is ordered. This is also compatible with the law of superposition. Sedimentary rock accumulates in the same order in which it is created. Therefore, the oldest layers are found at the bottom, while he newest ones are found at the top. This allows scientists to study the age of rock, and of any material that is found in these layers.

answer; a male inherits only one allele of the x-linked gene controlling hair color;

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.