C. Channel proteins bind to molecules too large to diffuse into or out of the cell, and allow them to pass.
Yes, there is a relationship between heart rate and blood flow.
<u>Explanation:</u>
The relation ship between the heart rate and blood flow is that with the increase in heart rate, the flow of the blood also increases but the increase in the flow of the blood is not as fast as the rate of beating of heart increases in comparsion.
Even though the heart is beating more times in a minute, healthy blood vessels get larger amount of blood to flow in an easier way when heart beat gets faster.
The right option is; c. many days of cloudy, wet weather
A stationary front is a pair of air masses that forms when a cold front or warm front stops moving because neither of them is powerful enough to move the other. A stationary front may stop moving for days and it can cause a cloudy weather with significant amount of rain or snow, especially if the front occurs in a region that has low atmospheric pressure.
Or <span>The average density of the boat, including the steel and air, is less dense than 1.00 g/cm³..</span>