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...
Coal itself is a black substance, consisting mainly of carbon and hydrocarbons. It is burned to release the energy of coal. One of the important uses of coal is electricity generation. The essence of coal is that plant remains are buried underground, isolated from the air for long periods of...
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 ...
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...
How Much Less Coal Must Be Burned to Slow Climate Change?Ken Caldeira
because as more of them are mined and burned, they become less available overall. Coal and oil are both fossilized plant material, which can theoretically replenish, but this is a process that takes millions of years, so the rate of renewal is not relevant when considering human rates of co...
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 ...
Solar power is now as cheap as some fossil fuels. It makes 1.5% of the electricity we use.Biomass energy(生物质能)Biomass energy is energy that we get from plants around us. For example, dead wood or grass is burned in power stations. This makes electricity.Biomass energy is green energy...
They keep oil in the sump from leaking into the combustion area, where it would be burned and lost. Most cars that "burn oil" and have to have a quart added every 1,000 miles are burning it because the engine is old and the rings no longer seal things properly. Many modern vehicles...