Sudhi is studying the motion of a toy car. She places the car in the middle of the ramp and releases it. which best describes the reference point in this scenario?

A: the top of the ramp

B: the bottom of the ramp

C: the ending position of the car

D: the starting position of the car

Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.

What mass of glucose is produced when 54g of water react with carbon dioxide

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse