Answer:
A. Earth's tilt on its axis
Explanation:
Because of the earth's tilt, during part of the year the NE US is angled towards the sun, but the other part of the year it is angled away from the sun. This is what gives us our seasons.
Answer:
37373773773738383828292929918283733737373733747744774
Blood vessels expand during hot weather and retract/ tighten in cold weather
Do you know , human eye and octopus eye are example of convergent evolution ! origin of both are different way but both works the same way, function of both are same !
