Many whales have tiny, unused hip and pelvis bones on their torsos. how does this evidence support theories about animal evolution? a. it shows that whales may have evolved from land-dwelling animals. b. it shows that whales evolved at the same time as other non-marine animals. c. it shows that many animals, including whales, evolved to have unused body parts. d. it shows that marine animals, like whales, evolved much more slowly than land-dwelling animals.

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?

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria

Which best describes the digestive system of arthropods? a incomplete, two openings b complete, one opening c two-way, one opening d one-way, two openings