Mason compared the properties of two compounds. Magnesium oxide is an ionic compound, and hydrogen peroxide is not an ionic compound. Therefore, both compounds most likely
have molecular structures.
can be highly reactive.
have low boiling points.
can dissolve in water.

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?

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

What function does the limb sever in each animal? how are the limb bones of the four animals similar? based on these similarities what can be inferred about the evolution of the four animals.