Oxygen, Carbon dixoide and nonpolar .
It specifies what exactly the variations are of whatever population is being examined.
The correct answer is 30:(
The principle underlying this change is called progression. This principle tells us that when your fitness level improves, your body has adjusted to your regular routine; thus, you will feel less sore than when you started the squats three weeks ago. During this time, your muscles have developed<span> and your body has adopted to the stress brought about by your exercise. </span>
Cell membrane i think as I remember
