George is running a 5-km race and his cells need more oxygen. The change that will help his body meet the increased demand for oxygen is his heart will start beating more quickly. This helps the oxygen get ferried throughout the system faster. The correct answer is A.
Answer: b
explanation: it mentions both education levels and careers. it is also a well-known truth.
Another name for kidney stones, is (Nephrolithiasis). Nephrolithiasis is the presence of calculi within the kidney. Nephrolithiasis is also the medical term for kidney stones.
So it's A. Nephrons
Glad to help ya!! :)
I think it is during your teenage years
Reliability and patience.
And maybe punctuality.
