The cells on your fingertips are exposed to friction every time you touch something. thus, you can surmise that the fingertips are covered in

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation:

answer; increases;