A student plants pea seeds in three identical pots. Each pot contains three seeds. The first pot contains potting soil, the second pot contains clay and the third pot contains sand. The seeds are given the same amount of water and sunlight for three weeks. What is the independent variable in this experiment?

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent

Organize the word parts according to where they appear in a medical term.

How does the human body lever work?