Seasonal changes occur because of
a. earth s tilt.
b. earth s shape.
c. the distance between earth and the moon.
d. the time of year.

Which of the following was not an effect of bolsa familia and the program to erradicate child labor (peti)? a. child labor was eliminated in brazil. b. 40 million families were lifted out of the lowest income level. c. the average years of schooling increased. d. more children began to graduate from high school.