The answer is race I think
59. How does our hearts never gets tire of pumping blood throughout our body?
Because that’s how amazing God created our body. As long as we are breathing, our heart will continue pumping. It will never get tired because it is its responsibility to pumps blood throughout our body. Our heart is also like other organs in our body, All of our organs will continue doing their responsibilities as long as we are alive. Thus the only way we can help them is to stay healthy.
I'm almost certain it's C, or at least that's the argument that I hear.
Answer:
The blood picks up co2 and also waste from the tissue. So I am guessing that it is co2.
Hope this helps.
In males seminal vesicles and a prostate gland and paired of bulbourethral glands. secretion of these gland produces a plasmic seminal fluid which is rich in fructose ,calcium and certain enzyme the fluid is semen which increases basicity in vagina and decrease acidity.