* Which of these organs belong to the respiratory system?

trachea
vein
villi
bladder

John is jogging on a winter day. the outdoor temperature is 31° f. yet his body temperature is 98°f. which term best describes the process causing this difference in temperature?

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the dependent variable in galileo's experiment?

Checking blood sugar levels before, during, and after exercise is important for diabetics. select the best answer from the choices provided. t f