« previous next »

Author Question: A high 18 oxygen/16 oxygen ratio in the shells of marine animals indicates __________. a. colder ... (Read 90 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?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

Your heart beats over 36 million times a year.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

(c) snow in Nunavut, alter the local albedo, causing altered microclimates. High albedos are found (c) snow in Nunavut, alter the local albedo, causing altered microclimates. High albedos are found
Erythrocytes contain large amounts of the oxygen-transporting protein Erythrocytes contain large amounts of the oxygen-transporting protein
The brains of animals of different evolutionary ages The brains of animals of different evolutionary ages
Fire activity ratio Fire activity ratio
Marine oil pollution comes from many sources Marine oil pollution comes from many sources
CaCO3 with oxygen isotopes CaCO3 with oxygen isotopes
Video: Regulation of GFR: autoregulation via tubuloglomerular feedback, neural & hormonal regulation

For a complete list of videos, visit our video library