From experience with my best friend, I´d say C.
<span>The nephron is the basic structural and functional unit of the kidney, it regulates the concentration of water and soluble substances like sodium through filtering the blood, reabsorbing what is needed and excreting the rest as urine. Therefore urine should be free of blood as the nephron filters the blood, cleaning it for the body to reuse.</span>
Answer:
All I can really say is to use your best judgement. I mean it's oki to b curious and want to know what your crush looks like, but it's a little suspicious if he wouldn't just give you a picture of himself, instead of you having to go to the school website (although I don't know if he has or hasn't). And no, It's not bad, because you didn't really turn him and his brother against each other. You didn't feel the same way and that's how you feel, no shame in that luv. Lol and I don't know about your picture being in his wallet, that's a little creepy, not gonna lie.
Explanation: Hope this helps in some way ^-^.
Active immunity
Active immunity is when something triggers an immunity system to produce antibodies, this something being a vaccine. Hope this helps!
