The most common lever in the human body is the a. first class lever b. second class lever c. third class lever d. fourth class lever select the best answer from the choices provided. a b c d

Does anyone have an answer to this question? if so me.

Which are fat-soluble vitamins? a. abcd b. abek c. abdk d. acdk e. adek

Me d: which system contains the heart, blood, and blood vessels? a. muscular b. circulatory c. respiratory d. digestive which system contains the pituitary, adrenal, and thyroid glands? a. respiratory b. circulatory c. endocrine d. reproductive