Ur cars exhaust tank ur freezer ur toaster ur microwave ur shower
H is 4*10^6 M , OH is 2.5*10^-9 M
Physical change alters a given material without changing its chemical.
Galileo disproved the Ptolemaic theory, sanctioned for centuries by the Church, which held the Earth to be the central and principal object in the universe, about which all celestial objects orbited.
Answer:
amino acids and urea
Explanation:
Amino acids are the building blocks of all proteins. Proteins comprise not only structural components such as muscle, tissue and organs, but also enzymes and hormones essential for the functioning of all living things. Urea is a byproduct of protein digestion.