Severe thunderstorms are possible in the central portion of the U. S. in the weather map above. Air is the low pressure system near these thunderstorms and is the high pressure system to the north.

A.

diverging from; diverging from

B.

diverging from; converging toward

C.

converging toward; diverging from

D.

converging toward; converging toward

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.