Air pressure is caused by the air molecules around us. Air particles are always in random and continuos motion, bombarding each other in random direction. As air particles collide they create pressure.
The correct option is this: A STRONG WIND BLOW ACROSS A MIDWESTERN PRAIRIE.
A strong wind is an example of a natural force. The prairie refers to a land fill with grasses and that is a natural factor also. Thus, a strong wind that is blowing across a prairie is generating a natural form of energy. The energy flow in the other options given are examples of man made devices.
I believe the blank space is preserved :)
Answer: Decreases
Explanation:
The amount of sodium in the blood will increase as the main function of the negative feedback is to maintain the homeostasis inside the body.
If blood pressure is too high, then heart rate decreases because of this the blood vessels increases in the diameter and the kidney retains less water.
These changes will return the blood pressure to be normal. The same process gets reversed when the blood pressure decreases.
Group 7A, the Halogens contain metalloids such as Astatine.
