Scientists examine the structure of an organic molecule and identify phosphate groups, sugar molecules, and nitrogenous bases.

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment

Which statement describes compounds a. compounds are made of one type of atom. b. compounds cannot be represented by models. c. compounds are represented by chemical formulas. d. compounds cannot be broken down into simpler forms.

Which describes the changes in the earths motion?