Answer:Nutrition can have a big impact on your overall health. ... In fact, making smart food choices can help you maintain a healthy weight, lower your risk for a number ... These foods often get their extra calories from saturated fats and added sugars.
Explanation:
Answer:
D) is the answer because it only allows particular molecules to get in and out
Use the settings of the machine to decrease the intensity
George can work out for the same amount of time but with a lower intensity that way his heart rate won't increase
Difussion occurs from a high concentrated region to a low concentrated region. The velocity of diffussion is proportional to the differential of concentrations. In the lung arrives blood with low levels of oxygen while the long is rich with fresh oxygen so the oxygen flows from the lung tissues to the blood.
The other tissues consume oxygen continually them they get poor in oxygen and so the oxygen that is in the blood diffuses to the tissue that is poor in oxygen.
