Coal, no matter in any country, is one of the most important energy sources and plays an important role in the process of industrialization. How is coal formed Coal itself is a black substance, consisting mainly of carbon and hydrocarbons. It is burned t
This is because excess fertilizers can seep into the soil and contaminate groundwater, or run off into rivers and lakes, causing harm to aquatic life. The question asks for the reason how fertilizers cause pollution. Option 1 is not correct as coal is not burned to make fertilizers. Option ...
How Much Less Coal Must Be Burned to Slow Climate Change?Ken Caldeira
while the rest (just 10%) was burned for other industrial/commercial requirements. All of this coal comes from mines that are either (near) surface or underground. Both forms of mining cause critical
To find out how many tons of coal were burned for our light bulb, we divide 876 kWh by 2,460 kWh/ton. That equals 0.357 tons. Multiplying by 2,000 pounds/ton, we get714 pounds(325 kg) of coal. That is a pretty big pile of coal, but let's look at what else was produced to...
W: You mean that when coal or oil is burned, acid gets formed. And when it rains or snows, the acid falls back on the earth? It's terrible.M: Exactly. What you said is fight. That's why it's so dangerous. Acid rain has been falling over areas of northern America and northern ...
is still ‘German unity trauma’. People are incredibly afraid that when the coal phase-out comes, this German unity trauma will repeat itself and suddenly a whole lot of people will become unemployed and the region will collapse and ‘then it's all over.’ This fear is extremely great.”...
根据“…biggest differences is electricity”可知,此处应用定冠词the修饰形容词最高级,表示“最大的不同”。故选A。 (9)题详解: 句意:我们烧煤或木头来取暖。 take拿,动词原形;to take拿,动词不定式;keep保持,动词原形;to keep保持,动词不定式。根据“And we burned coal or wood…warm”及常识可知,烧煤...
Once the body is completely burned, the chamber is then cooled and the cremated remains, which are often still recognizable as human skeletal remains, are swept with a long-handled hoe or wire-bristle broom into a tray. A powerful hand-held magnet is run through the ash to pick up metal...
This method could also reduce the amount of garbage piling up on the earth.Which of the following is NOT the result of burning garbage A.The garbage burned is turned into fossil fuels.B.The heat produced is used to boil water.C.The steam produced is used to make electricity.D.The steam...