Answer – D. RNA
Like proteins, Ribonucleic acid is another kind of organic molecule that also acts as a catalyst for chemical reactions. Asides acting a catalyst for chemical reactions, proteins have a wide variety of functions that they perform in in living cells.
Scientists use fossils to learn about organisms' lives and evolutionary relationships, to understand geological change, and even to locate fossil fuel reserves.
Enzymes are considered catalysts, they help reactants and can be used over and over
The answer is D because A,B,C all what cause damage
Answer:
Stratosphere
airline pilots prefer to operate in the stratosphere
