Which statements describe the sodium-potassium pump and its relationship to concentration gradients that exist across the cell membrane?
Select all that apply.

The pump moves sodium from an area of high concentration to a low concentration

The pump moves potassium from an area of high concentration to a low concentration.

The pump creates a potassium concentration gradient.

The pump creates a sodium concentration gradient.

i think the answer is gold im not entirely sure

i think the answer would be d

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.