They will fall at different rates because of air resistance
Only Extensive properties of piece will be changed. i.e Mass, Volume, Length etc.
Unit of measurement
ex: ft, in, etc.
Answer A: CO2
Reason: carbon dioxides formula is CO and the number next to it is the molecules
Answer:
B: circulatory system
Explanation:
The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.