Answer:Vitamin D3 is cholecalciferol and comes from animal-based sources. Both supplements are processed in the body by the liver to 25-hydroxyvitamin D, though vitamin D3 is thought to provide higher levels of 25D.
Explanation:
To do this, you would have to be running at least 26 seconds per lap. I have been running cross country running for the past two years, and my tip for making this time is just to consistently run a set pace for the laps. If you stop to walk, you will lose your momentum and it will be hard to start running again. The first few laps are going to be the hardest, but most of the pain comes from a psychological level. Once you get past the first few laps, you won’t be as worried about walking, and you could run the rest. It won’t be easy, but I highly suggest for you to run the whole time. This is the most efficient way to run the mile in 8 minutes and 23 seconds.
Answer:
A. . Blood from the veins enters the ventricles.
C. Atria push blood into the ventricles
Explanation:
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.
1. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle through the tricuspid valve.
2.The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve.
3. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve.
4. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.
I believe the answer is mycorrhizal symbiosis
