This topic contains a solution. Click here to go to the answer

Author Question: What is petroleum? a) Gas hydrates of methane and carbon dioxide b) Minerals deposited from ... (Read 39 times)

chandani

  • Hero Member
  • *****
  • Posts: 541
What is petroleum?
 
  a) Gas hydrates of methane and carbon dioxide
  b) Minerals deposited from biogenous secretions
  c) Oil and natural gas formed from remains of ancient microorganisms buried within marine sediments
  d) A combination of siliceous and calcium carbonate oozes that decompose

Question 2

What is the significance of stromatolites?
 
  a) They are composed of benthic patches of bacteria found at hydrothermal vents.
  b) Cyanobacteria produce carbonate structures in warm shallow seas that can date back to 3 billion years ago.
  c) They are composed of siliceous deposits of diatoms and dinoflagellates.
  d) They are composed of biogenous deposits of foraminiferans and coccolithophores.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cadimas

  • Sr. Member
  • ****
  • Posts: 362
Answer to Question 1

C

Answer to Question 2

B




chandani

  • Member
  • Posts: 541
Reply 2 on: Aug 22, 2018
Great answer, keep it coming :)


chereeb

  • Member
  • Posts: 326
Reply 3 on: Yesterday
:D TYSM

 

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?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

For a complete list of videos, visit our video library