Answer:
20
Explanation:
Approximately 80% of our water intake comes from drinking water and other beverages, and the other 20% comes from food.
From the inside or lumen, through the gut wall into the blood
The answer is tighten and contract.
In order for the students to pull the rope their muscles will need to tighten and contract so they are able to continuously pull with all their strength and power. Relaxed or twitched muscles will result in release of the rope.
The paramedics will help you by using a breathing machine
The great saphenous vein (or GSV).
