Your answer is it protects the heart and lungs
Think of tap water and how all those materials get in it like Fluoride
There are four basic types of learners, they are: visual, auditory, reading and writing and kinesthetic learners.
Active reading is an effective strategy for the READING AND WRITING LEARNERS. The reading and writing learners are very comfortable with written words, they prefer obtaining information by reading and writing. They learn best by interacting with texts.
B. Cloning because the selections don’t make sense
It’s D (example a turtle draws its head back into its shell when it’s shell is touched) I’d say it’s kinda of the same as odor (if u already answered it then dang)