If yellow, red and orange pigments exist in the leaves of trees, why are leaves green except for in the autumn?
a) chlorophyll is the most abundant off all the pigments.
b) chlorophyll molecules are the largest of the all pigment molecules.
c) chlorophyll reproduces faster than the other pigments.
d) green is the color of the spectrum most easily seen by humans.

Which pair of sentences is describing the same velocity? a. a car is parked. a car is moving in circles. b. a bus drives 40 miles per hour north. a truck drives 50 miles per hour north. c. a boy walks east at 6 kilometers per hour. a girl walks west at the same speed as the boy. d. valerie rides her bike south at 8 kilometers per hour. owen jogs south at 8 kilometers per hour.