Im sad anyone else sad

During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4

Does pretroleum jelly your hair grow

Andrew loves to go camping and hiking in the fall. about two weeks after his last camping trip, he noticed an expanding red, target shaped, rash on his arm. to avoid this illness, andrew should have select one: a. boiled his water before drinking. b. avoided contact with ticks. c. avoided contact with fleas found on mice. d. camped only in the spring.