Natural sciences deal with the physical world and include astronomy, biology, chemistry, geology, and physics. Applied science is the process of applying scientific knowledge to practical problems, and is used in fields such as engineering, health care, information technology, and early childhood education.
D. infarction
• infarction is defined as the obstruction of the blood supply to an organ or region of tissue, typically by a thrombus or embolus, causing death of the tissue (necrosis)
Speed up chemical reactions (Catalysts)
<span> Enzymes are usually proteins but some also contain nucleic acids (RNA in particular) and the list of chemical reactions that are catalyzed by RNA has been expanding. So the answer is proteins.</span>
