Which of the following occurs earliest in the menstrual cycle?
(2) The ovaries release a mature egg into the fallopian tubes
(2) Progesterone levels rise, thickening the uterine lining
() The uterine lining breaks down and is shed through the vagina
(0) Estrogen levels rise, thickening the uterine lining

You and a group of friends are spending your vacation hiking through the mountains. it is cold in the mountains. you will be expending a lot of energy while hiking and you will need plenty of energy to keep you warm. you should pack foods high in to provide the most energy or kilocalories per gram of food. a) carbohydrates b) lipids (fats) c) proteins d) sugars