The umbilical artery carries blood from the fetus to the placenta and the umbilical vein carries blood from the placenta to the fetus. how does the composition of the blood in the umbilical artery and the umbilical vein differ?
a. blood in the umbilical artery contains less glucose than blood in the umbilical vein.
b. blood in the umbilical artery contains less carbon dioxide than blood in the umbilical vein.
c. blood in the umbilical vein contains less oxygen than blood in the umbilical artery.
d. blood in the umbilical vein contains more urea than blood in the umbilical artery.

What role do bacteria play in the carbon cycle

Plants are used for so many things. in your house alone, you can probably look around you and see where plants have been used. for this project, you will identify various uses of plants in your home. directions make a list of objects, products, and any other items around your house where plants were involved in the production of the item. you should have a list of at least twenty items. then respond to the following questions: note: your list of objects and the answers following should be at least 200 words in length. what if plants no longer existed on earth? how would your life be different?

Which excerpt from the land, part 4 best supports the claim that paul is a talented horseback rider? a/“figure that says more than anything else! now, i want to ride that stallion! " b/my daddy shook his head. "paul only rides horses he knows. ” c/? i glanced over at the other rider. the fellow was older than i, and had the weight of a man on him. d/a man out of alabama, man name of ray sutcliffe, told my daddy i was such a good rider, he wanted me to ride some races for him.