MASS: because it is the measure of the amount of matter in an object
Answer:
A) NaCl will be exported from the red blood cells by facilitated diffusion.
So sound travels 1 kilometer in roughly 3 seconds and 1 mile in roughly 5 seconds. When you see the flash of a lightning bolt, you can start counting seconds and then divide to see how far away the lightning struck.
By knocking at the bend of the knee with a small "hammer". If the leg "spasms" then the superficial reflex is in working condition. Hope this helps :)
Do your best do all easy questions first stay calm and you can do it
