Statements A, B and D are correct.
Statement C is incorrect as hydrogen atoms are also present.
<span>The prefrontal cortex controls inhibition of impulses as well as reasoning and problem solving. This structure is also responsible for consciousness and attention, in short this is one of the most important parts of the brain to our every day functioning.</span>
Non contact- gravitational force, magnetic force, electrical force, nuclear force, electrostatic, electromagnetic, muscular <span>movements, x-rays, radio waves, infrared, and visible light.</span>
<span>The ways for lessening the effect of increased carbon include reducing the components of the carbon footprint (the amount of carbon dioxide and other carbon compounds emitted due to the consumption of fossil fuels).</span> Air travel is one of the main components of the carbon footprint. <span>The solution for reducing the amount of carbon dioxide in the air is to burn fewer fossil fuels, but it is very difficult because the burning of fossil fuels is necessary for heating, electricity generation and transport.</span>
Power stations that burn fossil fuels to produce electricity are one of the main contributors of carbon dioxide in the atmosphere and the way to reduce it is to use less electricity which can be done by turning down the heating at home, insulating home, <span>using low-energy lamps etc.</span>
