« previous next »

Author Question: Which of the following is an essential characteristic of an index fossil? A) The organism lived ... (Read 193 times)

imanialler

  • Hero Member
  • *****
  • Posts: 539
on: Jul 14, 2018
Which of the following is an essential characteristic of an index fossil?
 
  A) The organism lived in a very specific environment or two, such as tropical volcanic islands.
  B) The organism lived for a very limited period of geologic time.
  C) The fossils of the organism are exceptionally well preserved.
  D) The organism lived on the land, not in the ocean.

Question 2

Using the known rates of radioactive decay to date the crystallization of certain minerals is known as ________ dating.
 
  A) conventional
  B) radiometric
  C) relative
  D) fossil assemblage


234sdffa

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 14, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

imanialler

  • Hero Member
  • *****
  • Posts: 539
Reply #2 on: Jul 14, 2018
Correct answers!


234sdffa

  • Sr. Member
  • ****
  • Posts: 341
Reply #3 on: Jul 14, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

A fossil trilobite. A fossil trilobite.
Emphysema. (a) Illustration comparing normal lungs and emphysemic lungs. The inserts illustrate how Emphysema. (a) Illustration comparing normal lungs and emphysemic lungs. The inserts illustrate how
the history of life according to fossil records the history of life according to fossil records
Fossil Fuels Energy Yield and Pollutants—Comparison Fossil Fuels Energy Yield and Pollutants—Comparison
Heat Index Heat Index
Milk is essential source of calcium Milk is essential source of calcium
Video: Muscular System Animation

For a complete list of videos, visit our video library