A hypothesis can become A. a scientific theory if it is supported by repeated experimentation.
Answer::: Brain structures called the hypothalamus and pituitary gland control the menstrual cycle. The hypothalamus triggers the pituitary gland to make hormones that trigger the ovaries to make oestrogen and progesterone. ... Disorders of the hypothalamus, pituitary gland or ovaries can affect menstruation, causing amenorrhoea
Low levels of estrogen is a sign that the ovaries of a woman are beginning to fail. This is a common occurrence when one is at menopausal stage. Estrogen and progesterone naturally decrease and eventually stops the menstrual cycle. Hope this helped.
Answer:
White blood cells that are increased in allergic individuals are the basophils
Explanation:
The percentage of basophils in normal blood is 0 to 2%, but in the presence of inflammations and allergic reactions their value increases.These cells have granules in their structure, and release heparin and histamine in these situations.
Answer:
The water cycle is driven primarily by the energy from the sun. So basically the answer is D. the sun
Please correct me if I am wrong
Explanation:
