Could I have some help on this pls?

Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy

16 select the correct answer from each drop-down menu. sharks, whales, and dolphins share similar features such as body shape and the position of fins. hoy while whales and dolphins have lungs. these differences indicate that the organisms share a comme whales also possess a vestigial pelvic bone. the presence of the pelvis bone may indicate that whales reset next

How do you find the independent variable and dependent variable? how do you you know is which?