Answer:
A
Explanation:
Coal is majorly used to produces electricity. The coal is ignited and the heat produced used to heat water to steam. The steam is then used to drive turbines with a dynamo effect to produce electricity. Turning off lights when not in use reduces the demand for electricity hence reducing the amount of coal needed to meet this demand.
Other ways to conserve energy is using bulbs with low energy demand - such as LEDs - and improving natural lighting indoors.
Answer:
Glucose
Explanation:
Water is an obvious one. Dissolved in the water are traces of urea. And there are concentrations of sodium. No glucose though.
White blood cells produce antibodies which fight off the pathogens
Answer: I think its carbon!
