The Sun is the main cause for our weather, and different season (in different areas where you live it depends on how hot or cold it is also caused by the sun)
Most seasons, like in summer it's hot Also caused by the sun, in winter it snows because the sun is in a different location.
Answer: I think it's either C or B? but I could be wrong.
Explanation:
Something that could help: The function of an organ system depends on the integrated activity of its organs.
Answer:
Estrous cycles give females repeated opportunities to become pregnant throughout their productive lifetime. The cycle is regulated by the hypothalamic-pituitary-gonadal axis, which produces hormones that dictate reproductive events.
Explanation:
I think the answer would be white blood cells because the white blood cells are trying to fight the bacteria off. That’s what I think. Hope this helped