If the Earth were not tilted in its orbit, how would the climates and seasons be affected at the equator and in the temperate zones?
a) Climates would become more extreme at the equator and milder in the temperate zones.
b) Climates would become milder at the equator and more extreme in the temperate zones.
c) There would be no change in climates and seasons at the equator, but the temperate zones would experience more extreme temperatures.
d) There would be no change in climates and seasons at both the equator and in the temperate zones.