Which statement best summarizes Gregor Mendel's contribution to science
Mendel formulated a hypothesis and then tested it.
Mendel coined the word genes to describe inherited traits.
Mendel found evidence that there are two factors for each trait.
Mendel studied the pea plants he grew in his garden.

The diagram below shows the layers of a rock having a trilobite: a rock column labeled rock is shown. the column has three layers. the bottommost layer of the rock has one shaded rhomboid shape, the middle layer has a rhombus with a diagonal along with two identical organisms marked as, trilobite, in the key, the top layer has two semicircles. a key is shown on the right side of the diagram. the shaded rhombus is marked as a, the rhombus with the diagonal is marked as b, the semicircle is marked as c which statement about the rock fossils is true?