Answer:
C
I think buffers prevents small amounts of acids and blood from coming and changing the pH of the body, because the buffers are barriers that do not let blood and acid pass through.
Hope it helps!
Answer:
400
Explanation:
Because if you pull one black marble out of four and there are 100 black marbles then there is 300 others, so in total it would be 400 marbles.
thanks if i'm given brainliest!!!
Answer:
d. It also includes , breathing, digestion, swallowing
60*1.609=96.5606 km/hr
that’s the only one i know bc you didn’t include an image for the steam train...atleast i can’t see it
