The absence of fold mountains and the presence of many imply that mars has been geologically quiet for billions of years

The absence of fold mountains and the presence of many Meteor craters imply that Mars has been geologically quiet for billions of years. Meteor Crater is a meteorite impact crater approximately 37 miles (60 km) east of Flagstaff and 18 miles (29 km) west of Winslow in the northern Arizona desert of the United States.

lysosomes contain a variety of enzymes, enabling the cell to break down various biomolecules it engulfs, including peptides, nucleic acids, carbohydrates, and lipids (lysosomal lipase). the enzymes responsible for this hydrolysis require an acidic environment for optimal activity. hope i !

thinking it would be d not too sure but i think it's right