Author Question: Which type of rock is abundant in older rock formations but more rare in newer formations, may ... (Read 78 times)

CBme

  • Hero Member
  • *****
  • Posts: 548
Which type of rock is abundant in older rock formations but more rare in newer formations, may contain oil or gas, and is formed by a reaction with a previous sedimentary rock?
 
  A) anthracite
  B) bituminous coal
  C) chert
  D) dolostone

Question 2

What conditions during the formation of coal may reduce its quality for industrial use?
 
  A) Very high heat and pressure are applied.
  B) Clay and silt wash periodically through the swamp that formed the coal.
  C) The swamp that formed the coal floods.
  D) The coal is formed of mostly green plants and contains very few woody trees.



snackralk

  • Sr. Member
  • ****
  • Posts: 363
Answer to Question 1

Answer: D

Answer to Question 2

Answer: B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

For a complete list of videos, visit our video library