The primarily use of coal is mostly used for electricity generation, steel production, cement manufacturing, and as liquid fuel.
Advantages: it helps produce electricity, coal energy is affordable energy source because coal's stable price compared to other fuels sources, coal is easy to burn, coal produces high energy upon combustion, coal energy is inexpensive, coal is abundant, coal energy is a reliable energy source.
Disadvantages: coal energy produces large amount of carbon dioxide which leads to global warming and climate change, the burning of coal is not environmental friendly because it produces harmful byproducts and gas emission such as sulfur dioxide, carbon dioxide and nitrogen oxide that causes pollution to the environment including acid rain, coal energy is nonrenewable energy source, coal is fast depleting because we dont consume too much of it, coal mining ruins the environment and puts the lives or people especially the coal miners in danger. <span />
Answer:
i am pretty sure its indicator
Answer:
The natural level of ozone in the stratosphere is a result of a balance between sunlight that creates ozone and chemical reactions that destroy it.
Explanation:
I think in someway social hazards do affect you. But then again you choose who you are and how you choose to react to things. Seeing things like the walkout on social media might make you happy that kids are standing up against gun control. But then you could see the news of syria kids, and you could immediately feel depressed or sad. I know social media has definitely made me feel insecure and lonely, makes other people's lives look better than mine.<span />
<span>I found the exercise on the internet. Attached is a pic of the diagram.
Correct answer:
"All collisions between particles are perfectly elastic."
This is called elastic collision. Elastic collision is the </span><span>encounter between two molecules where the total </span>kinetic energy<span> of the molecules before the encounter is equal to their total kinetic energy after. The perfectly elastic collision it only happens, though, when the kinetic energy is not transformed into other forms of energy.</span>