Which part of the eye controls whether or not the pupil dilates or constricts?
iris
cornea
retina
optic nerve

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?

Building glycogen from glucose molecules is an example of