Earth has seasons because?

Because the earth is tilted on a axis and tilts differently to get the 4 different seasons

Different parts of Earth get the Sun’s direct rays as we travel through the year. Different Continents don't have the same seasons as us because the sun is not shining its direct rays on us during different times of the year. 
Hope this helps:)

Humid continental climate is found in the interior of continents between the 30 and 60 degrees latitude, but usually above the 40 degree line.   40 degrees north of the equator means less direct sunlight and therefore less warmth.   this climate is mainly found in the northern hemisphere since there are no major landmasses in the southern hemisphere.  if you live in northern indiana, you know all about humid continental because that is the climate type you have!

Answer// dinosaurs emerged during mesozoic era;