« previous next »

Author Question: A high 18 oxygen/16 oxygen ratio in the shells of marine animals indicates __________. a. colder ... (Read 33 times)

abarnes

  • Hero Member
  • *****
  • Posts: 556
on: Jul 10, 2018
A high 18 oxygen/16 oxygen ratio in the shells of marine animals indicates __________.
 
  a. colder temperatures and lower sea levels
  b. higher temperatures and lower sea levels
  c. colder temperatures and higher sea levels
  d. warmer temperatures and higher sea levels

Question 2

Crystalline materials that have been buried in sediments may be chronometrically dated using the __________ method.
 
  a. electron spin resonance
  b. stratigraphic
  c. optically stimulated luminescence
  d. paleomagnetism


strudel15

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 10, 2018
Answer to Question 1

Correct Answer: a

Answer to Question 2

Correct Answer: c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Shells of Gas Around SN 1987A Shells of Gas Around SN 1987A
Do you see animals or people first? Do you see animals or people first?
Normal oxygen sensor frequency is from about one to five times per second. Normal oxygen sensor frequency is from about one to five times per second.
A gasoline direct-injection system injects fuel under high pressure directly into the combustion ... A gasoline direct-injection system injects fuel under high pressure directly into the combustion ...
Marine oil pollution comes from many sources Marine oil pollution comes from many sources
Using trace elements in carbonate shells to estimate temperature Using trace elements in carbonate shells to estimate temperature
Video: Contraction and Relaxation Animation

For a complete list of videos, visit our video library