Which vitamin helps in the production of red blood cells and supplies oxygen to cells? a) iron
b) protein
c) copper
d) calcium​

A17-year-old primigravida is admitted in early labor. her cervix is 2 to 3 cm dilated and 100% effaced. the fetus is cephalic, and the presenting part is at –1 station. her membranes are intact. the patient is holding her boyfriend's hand tightly and breathing rapidly with each contraction. she tells the nurse in a shaky voice, "i'm so nervous. i've never been in a hospital before. i don't know anything about labor or if i can do this." what is an appropriate nursing diagnosis for this patient?

Why was the sample heated in step 5? describe the chemical principles involved in the reasoning behind this step?

The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is