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

Author Question: A rock that is 400 million years old comes from the ________ Period. A) Paleozoic B) ... (Read 59 times)

appyboo

  • Hero Member
  • *****
  • Posts: 527
on: Jul 16, 2018
A rock that is 400 million years old comes from the ________ Period.
 
  A) Paleozoic
  B) Phanerozoic
  C) Precambrian
  D) Silurian

Question 2

A rock that is 200 million years old comes from the ________ Era.
 
  A) Cenozoic
  B) Mesozoic
  C) Paleozoic
  D) Jurassic/Triassic


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

leahm14

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: B


appyboo

  • Member
  • Posts: 527
Reply 2 on: Jul 16, 2018
Excellent

epscape

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Transformation and Evolution of a Long-Period Comet Transformation and Evolution of a Long-Period Comet
During drought years on the Galapagos, small, easily eaten seeds become rare, le During drought years on the Galapagos, small, easily eaten seeds become rare, le
Granite: a Common Rock in Continental Crust Granite: a Common Rock in Continental Crust
Agriculture in 10,000 years ago Agriculture in 10,000 years ago
Embryonic Period - By the second day after fertilization Embryonic Period - By the second day after fertilization
This table shows the growth of a crowd at a rally over a 3 h period. This table shows the growth of a crowd at a rally over a 3 h period.
Video: Monohybrid crosses

For a complete list of videos, visit our video library