« previous next »

Author Question: When do black smokers occur? A) during plate tectonics movement B) during underwater volcanic ... (Read 68 times)

biggirl4568

  • Hero Member
  • *****
  • Posts: 551
on: Jul 16, 2018
When do black smokers occur?
 
  A) during plate tectonics movement
  B) during underwater volcanic reactions
  C) components dissolve below the seafloor, but then precipitate when they contact cold water
  D) components squeezed from beneath the sea floor dissolve upon contact of cold water

Question 2

What apparent difference is there between a gneiss that is formed from igneous rock and one formed from sedimentary rock?
 
  A) crystal size
  B) mineral content
  C) age
  D) color


Sweetkitty24130

  • Sr. Member
  • ****
  • Posts: 291
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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?

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?

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?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Changes that occur during an action potential. Changes that occur during an action potential.
Gallery of Xylosandrus crassiusculus split open, with pupae and black fungus Gallery of Xylosandrus crassiusculus split open, with pupae and black fungus
Underwater seal chest drainage device. Underwater seal chest drainage device.
The basal ganglia are clusters of gray matter that control learned movement and are involved with ... The basal ganglia are clusters of gray matter that control learned movement and are involved with ...
Testing rapid alternating movement, palm down Testing rapid alternating movement, palm down
Black-tailed Prairie Dog (Cynomys ludovicianus). Black-tailed Prairie Dog (Cynomys ludovicianus).
Video: Nucleic acid digestion -small intestine

For a complete list of videos, visit our video library