Which of the two are the less dense material shown?

material mass volume
rock. 1000. 0.5
pillow. 200. 10
bottle of soda. 2000. 2
loaf of bread. 100. 1

a) loaf of bread and pillow
b) rock and bottle of soda
c) bottle of soda and loaf of bread
d) loaf of bread and rock

Dna has unique properties that allow it to accurately retain genetic information, even after multiple rounds of replication. one aspect of dna that allows it to accurately store genetic information is the base pairing from chargaff\'s first rule of the four nucleotide bases. if the c content of a dna molecule is 22%, what are the percentages of the remaining bases?

What are some possible short and long term medical concerns for crew members on longer space exploration trips

Modern whales developed their traits through natural selection what occurs during the process of natural selection