What is an enzyme that allows the human body to digest starch

(! ) what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes