Answer:
Oxygen and glucose
Explanation:
Plants use the sun, water, and CO2 to make their own energy. Glucose is the result, and Oxygen is just a biproduct.
Carbon is black and sulfur is yellow
It is a good idea because when mercury heats up, the molecules spread farther apart. Therefore, making them look to have expanded. Thermometers that are digital use a sensor to, as you would say feel the temperature around it.