Small rocks weather more quickly than large rocks because, compared to their volume, the surface area of small rocks is

a. thinner
b. larger
c. smaller
d. thicker

Name the type of chemical that speeds up digestion

Which of these is not a nucleotide base found in dna?

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes