Josalin is painting a picture of a rainbow. Which allows her to pick out the colors she needs? rods
cones
iris
pupil

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out