What can you infer about plankton from the fact that they live close to the surface of the ocean? They need sunlight to survive.
They can swim very fast.
They will sting you if you go swimming.
They are rarely eaten by other forms of marine life.

Then why is Plankton at the bottom of the ocean in a bucket?

co2reflects heat radiation back to earth buning coal and oil emits co2 globe warms

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