Ahmad made a very simple electromagnet out of a nail, copper wire, and a AAA-sized battery. His magnet was able to lift one paper clip from 2 centimeters away. Which of the following is NOT a way Ahmad can improve the strength of his electromagnet? A. He can use a thicker piece of the copper wire.

B. He can reverse the orientation of his battery.

C. He can use longer wire for more coils around the nail.

D. He can increase the size and voltage of his battery.​

Independent variable (IV): Type of flowers

Dependent variable (DV): Growth of flowers

Constants: the same amount of sunlight, same amount of water

Control group: Four flowers were tested. Hydrangeas, roses, daisies, and tulips.

Explanation:

Dependent variable is the variable that is being measured in the experiment.

Constants or control variable is the variable that the experimenter keeps constant or unchanged throughout the experiment.

Idk if this is the answer fully. I only put the constants and variables.