The earth is constantly spinning on its axis, like you might spin a basketball on your finger.

it is this spinning of the earth that causes
a) the summer-time heat.
b) the need for a leap year.
c) the changes in the seasons.
d) the cycle of night and day.

type 2 happens when excess consumption of high-sugar foods flood the blood supply with glucose and reduce the production and effectiveness of insulin. if a person has prediabetes, they can reduce the risk of full diabetes through regular exercise and a balanced, low-sugar diet.

it is either c or d and i know for sure it is not a or b

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.