This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Why are ores so valuable? A) They are sources of naturally occurring gold. B) Metals can be ... (Read 93 times)

B

  • Hero Member
  • *****
  • Posts: 570
on: Jul 29, 2018
Why are ores so valuable?
 
  A) They are sources of naturally occurring gold.
  B) Metals can be efficiently extracted from them.
  C) They tend to occur in scenic mountainous regions.
  D) They hold many clues to Earth's natural history.

Question 2

Given that the total number of atoms on our planet remains fairly constant, how is it ever possible to deplete a natural resource such as a metal?
 
  A) The problem remains that not everyone recycles as they should.
  B) Recycling only forestalls the inevitable depletion of metal resources.
  C) The atoms don't leave our planet, which is why naturally occurring materials never really reach the point of depletion.
  D) The problem is with the expense of collecting metal atoms that are uniformly dispersed.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

stanleka1

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: D


B

  • Member
  • Posts: 570
Reply 2 on: Jul 29, 2018
Wow, this really help

peter

  • Member
  • Posts: 330
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Molten gold beetle Molten gold beetle
Drawing shows what is occurring electrically at each part of the scope pattern. Drawing shows what is occurring electrically at each part of the scope pattern.
“New” Renewable Energy Sources “New” Renewable Energy Sources
Different sources for 100 calories worth of protein Different sources for 100 calories worth of protein
Gene gun used to blast gold particles containing pea gene A into cells of white petals Gene gun used to blast gold particles containing pea gene A into cells of white petals
Video: Pericarditis

For a complete list of videos, visit our video library