I would say that the kidneys purpose is to filter waste material from the blood primarily to remove waste fluid from the blood and leave just the right of salt and minerals in the blood and remove the waste fluid which is known as urine.
<span>Answer: absence of xylem and phloem
hope this helps :3</span>
Answer:
The Myelin Sheath allows neurons to speed up the transmission of nerve impulses.
If you are talking about Alfred Wegener, then his Hypothesis was Continental Drift, a Theory that suggested that all the continents were once one large supercontinent, named Pangaea, But drifted apart from each other over a long period of time.
I think it is A but not 100% sure. Think of an enzyme like a key unlock the lock is the protein. And to activate getting inside your car or house you have to fit the key into the lock.
