Which of the following best defines a gene pool? A. the sum of all genetic traits in a population’s individuals at a given time
B. any movement of genes from one population to another
C. any movement of organisms from one environment to another
D. the random change in the frequency of an allele in a pop

I need answer quick please

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?

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

What kind of bond is created by the attraction between atomic particles of opposite charge? ionic bond hydrogen bond covalent bond nuclear bond