What organ acts like a filter to clean-up the blood?

pancreas
heart
liver
kidney

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism

Which of the following would be a body response when stepping outside without a coat on a snowy day? a. senaceous glands. secrete more senum b. more liquid is transported by the body to the skin fir insulation c. blood vessels in the skin narrow and contract d. blood vessels in the skin expand

Which particle controls what element an atom is?