Im pretty sure its metabolic bone diseas i might ve wrong but im pretty sure thats it.
Im going with option 4, i thnk that would be correct, if not, should be option 2 then
Answer:
First class lever
Explanation:
fulcrum is in the middle of the effort and the load. This type of lever is found in the neck when raising your head to head a football. The neck muscles provide the effort, the neck is the fulcrum, and the weight of the head is the load.
The answer here is B they are each made of matter. some are compounds, and some are elements they all contain Atoms this is because Silver and Oxygen are elements while Carbon Dioxide and Water are compounds. Although you do not have the choices down, I have come across this question before.
Answer:
acting as an antibacterial agent.
discouraging bacterial growth.
Explanation: