Ow are igneous rocks formed? a. lava or magma heats up and crystallizes. b. lava or magma cools and then crystallizes. c. heat and pressure from nearby magma changes existing rock. d. sediments deposit in a lake and turn to stone.

Urgent. the table shows the relative blood flow through some organs in the human body that is, the percentage of blood that flows through a given organ, through which organ(s) does all the blood flow? explain the effect of exercise on blood flow to skeletal muscles.

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass

Polar zones are cold and tend to be dry because of a pressure system of cold. low high