Answer:
in the first question
the air move from higher concentration to lower concentration and lower to higher
Explanation:
when the oxygen gets in the place in the chest increase and when we release the air the will be contracted
when the air is outside chest will have no air
outside air will get into chest
and in verse vice
The answer is amino acid
the basic building block of a protein is called an amino acid. There are 20 amino acids in the proteins you eat and in the proteins within your body, and they link together to form large protein molecules.
They can explodeand kill the cell, thats why they are nicknamed "suicide bags"
All living things depend on the sun’s energy for survival. And, reef plants get it from the sun
