The brain and spinal cord work together so the body can receive signals and react to the environment. What is the spinal cord?

Which of the following is a way that minerals are used? a. industry construction technology d. all of the above

What happens when water’s salinity increases? mass decreases. freezing point decreases. buoyancy of objects decreases. the amount of dissolved minerals decreases.

24. how are vaccines used to keep people healthy?