This lesson begins with students engaging in the practice of science -- observing the phenomena, describing their observations, and making sense of what they see. They observe annelid behaviors using a Shape of Life video with the audio turned off. They try to figure out what the phenomenon (the behavior) is, how it might help the organism survive, and how it might impact the environment. Working with a partner, they make hypotheses about what they are observing and organisms' adaptions that allow it to perform the behavior.
The fossil record documents the existence, diversity, extinction, and change of many life forms throughout the history of life on Earth.
Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.