Adog pants in the heat to control its body temperature. panting is a mechanism that dogs use .
part 1 part 2
a: digestion a: enegry production
b: homeostasis b: regulation
c: stimulation c: reproduction

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

hi i’m going crazy about going tomorrow and i’ll tell you what i’m doing and i wanna is a way ya