« previous next »

Author Question: When do black smokers occur? A) during plate tectonics movement B) during underwater volcanic ... (Read 77 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?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

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.

Black Hamburger Black Hamburger
Labeling of black cohosh: (b) back label with more health claims and FDA disclaimer Labeling of black cohosh: (b) back label with more health claims and FDA disclaimer
Plate. Plate.
Typical timing marks. The numbers of the degrees are on the stationary plate and the notch is on ... Typical timing marks. The numbers of the degrees are on the stationary plate and the notch is on ...
Video: Alternative Energy Sources

For a complete list of videos, visit our video library