Smith and cuvier discovered that similar groups of fossils in distant rock layers could be correlated. why was this such a major breakthrough in geology?

a. it disproved the principle of superposition.
b. it proved igneous rocks held more information than sedimentary rocks.
c. fossils could now be used to identify rock layers.
d. fossils were no longer needed to study the history of earth.

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.