« previous next »

Author Question: In the United States, what is the term for the softest coal? The hardest coal? What will be an ... (Read 43 times)

james9437

  • Hero Member
  • *****
  • Posts: 568
on: Jul 21, 2018
In the United States, what is the term for the softest coal? The hardest coal?
 
  What will be an ideal response?

Question 2

What is coal? Where did it come from?
 
  What will be an ideal response?


DylanD1323

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 21, 2018
Answer to Question 1

Softest is lignite or brown coal. Hardest is anthracite or hard coal

Answer to Question 2

Coal is black or brown rocklike material developed from plants that died 1 million to 400 million years ago.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Associative Long-Term Potentiation Associative Long-Term Potentiation
Sumatran Tiger Fewer than 400, Indonesia and Texas Ocelot Fewer than 250, southern United States, ... Sumatran Tiger Fewer than 400, Indonesia and Texas Ocelot Fewer than 250, southern United States, ...
Long-term Potentiation in the granule cell layer of the rat hippocampal dentate gyrus. (Traces ... Long-term Potentiation in the granule cell layer of the rat hippocampal dentate gyrus. (Traces ...
Lightning Casualties in the United States by Location or Activity Lightning Casualties in the United States by Location or Activity
Incidence of acute hepatitis B in the United States, 1980–2008. Incidence of acute hepatitis B in the United States, 1980–2008.
Post-term birth rates, by province/territory, Canada Post-term birth rates, by province/territory, Canada
Video: Oxygen transport: association and dissociation & Factors that affect hemoglobin's saturation with O2

For a complete list of videos, visit our video library