Match the correct term with each part of the wave

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?

An astronaut on the moon throws a baseball upward. the astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is 3030 ft per sec. the height s of the ball in feet is given by the equation s equals negative 2.7 t squared plus 30 t plus 6.5s=−2.7t2+30t+6.5, where t is the number of seconds after the ball was thrown. complete parts a and b.

Why should the wavelength scale of spectroscope be calibrated