Measure the angle of incidence and the angle of refraction for three different laser positions. Record each in the table below.
Angle of Incident
Angle of Refraction

What must happen before a body cell can begin mitotic cell division

How does the presence of oxygen affect the chemical pathways used to extract energy from glucose?

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.