MD.2.0. Earth/Space Science: Students will use scientific skills and processes to explain the chemical and physical interactions (i.e., natural forces and cycles, transfer of energy) of the environment, Earth, and the universe that occur over time.
2.B.2. Earth History: Recognize and explain that fossils found in layers of sedimentary rock provide evidence of changing life forms.
2.B.2.a. Recognize how different types of fossils are formed, such as petrified remains, imprints, molds and casts.
2.B.2.b. Recognize and explain that the fossil record of plants and animals describes changes in life forms over time.