What is the function of the valves within the heart and veins? to ensure the production of blood within the body. to ensure coordination of the heart cells for pumping blood. to ensure that foreign materials do not enter the heart. to ensure that blood flows in one direction only.

On edge.nuity the answer should be the last one, D. Hope this helps :)

the media can affect your mental wellness and physical wellness, so the answer is false. (＾＾)ｂ

well god made humans for male and female to merry each other, and he does not hate gays he condemns it, and that's also the example jehovah's witnesses follow, we don't get involved with arguments or hate gays but we just condemn it. to find more information, you can go to our website jw.org and find more answers to your question just by tapping of the top right search bar and asking your question and then it will show you all the free bible publications that fit with you question, this site is entirely free and there fo anyone's usage.   ( i do not own jw.org)