It's caused by blood pooling in the legs, so there's insufficient return to the heart and brain. Normally, moving one's legs helps to pump blood back to the heart through muscle contraction. Locking the knees makes standing still easier, but reduces use of the leg muscles. In some people, this pooling may lead to hypoperfusion of the brain and fainting, which is essentially the body's way of putting the brain and the legs and the heart at the same level.
Answer:
Basically, a standard high school baseball diamond, there are 90 feet between the bases; a base runner taking the standard route from home to second covers 180 feet. The distance across the infield from the back tip of home plate to second base is 127 feet, 3 3/8 inches.
Explanation:
The answer is B,I’m not sure tho sorry
Both are exchange of gases in plants ! some differences are ....
1) respiration takes place all the time while photosynthesis happens only in the presence
of sunlight !
2) in respiration O2 is used but in photosynthesis CO2 is used !
3) starch breaks to give energy in respiration but in photosynthesis starch is formed !
Answer:
weather rock Explanation: its right on quizlet
