As you build circuits, you will alter resistance, which is the variable. You will measure how changing the voltage affects the current, which is the variable. A "constant" is a parameter that stays the same regardless of the other variables, and in this case, is held constant.

The answer to this question is  c. pharmaceutical accumulation  reclaimed water refers to the water that being used again after it already  used for agricultural purposes.this type of water often contains pharmaceutical accumulation because of the chemical fertilizer that is used for the plants is absorbed into the water.

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This would be an open primary. a closed primary people can vote only prior to election day if the party if they are registered. independent voters can not participate. there is not a wide-open primary, but there is a semi-open primary.

Answerequatorial guinea,gabon, and western sahara;