The answer is B
An open system has its energy and matter leave and enter the system's boundaries unlike in a closed system where energy remains within the system.
The earth's atmosphere shares heat and water vapor with the hydrosphere (oceans, seas and lakes), energy form the sun, in the atmosphere and then partly radiated back to space
The polar jet stream often plunges southward. When this happens, it can drive cold fronts to regions as far south as Florida. When the polar jet stream plunges south over the United States during the winter time, it is sure that some very cold weather will follow. It changes condensation forms, causes strong storms, thus, transporting cold air.
The answer is a Vagus Nerve.
Answer: B
Explanation: Transport of pebbles in a stream causes them to collide and rub against one another and the stream bed, and the resulting abrasion produces the familiar smooth and rounded shape of river rocks.
