they are strongest between latitudes of 30°N and 60°N. but they move every year, "following the sun".
A - Herbivores
Carnivores only eat meat, Omnivores eat both, and Herbivores only eat plants.
I think the answer is C, because repeating an experiment would mean the result is more accurate when done more then once. i learned this in around 7th grade, I hope it helps! (: