The jet stream over North America separates cold air masses in the north from warmer air masses to the south. The jet stream tends to move farther south in winter. How could this change in position affect weather in the United States?

A) Severe storms such as thunderstorms and tornadoes would only form in the far north during this time.

B) Cold fronts forming south of the jet stream would become stationary, producing dry conditions north of the jet stream.

C) Warmer air would tend to flow north, producing mild winter temperatures in regions that are normally colder.

D) Colder air would move farther south, producing colder temperatures in regions that are normally warmer.

This is a science question if you get it right i will give you brainliest so pls help also this is a 7th grade question

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

conservation of mass

mass before something happens = mass afterwards

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