Which equation describes a parabola that opens up or down and whose vertex is at the point (h, v)? a. x = a(y - v)2 + h b. y = a(x - h)2 + v c. x = a(y - h)2 + v d. y = a(x - v)2 + h

A3-year-old child with nephrotic syndrome has been receiving prednisone for 1 week. the nurse reviews the child's progress record and determines that the medication has been effective. what information supports this conclusion? select all that apply.

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

Match the type of adaptation to the correct example, structural adaptation functional adaptation behavioral adaptation example type of adaptation elephants live in herds to protect their young leaves of a rain forest plant species have a pointed tip that enables rainwater to drain off easily. camels have nostrils that they can close snakes produce venom to kill prey and defend themselves. earthworms coil when touched, as part of a defense mechanism. human skin darkens with increased exposure to sunlight.