This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: True or False: Earth exhibits a gradual inward transition from low-density to high-density rock. ... (Read 76 times)

nelaaney

  • Hero Member
  • *****
  • Posts: 560
on: Jul 16, 2018
True or False: Earth exhibits a gradual inward transition from low-density to high-density rock.
 
  Indicate whether this statement is true or false.

Question 2

How did the hydrosphere and atmosphere form?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mk6555

  • Sr. Member
  • ****
  • Posts: 310
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: FALSE

Answer to Question 2

Answer: Two contrasting hypotheses explain the origin of Earth's atmosphere and hydrosphere. One hypothesis suggests delivery of water-rich materials from meteorites and comets that accreted to the initially dry Earth very late in the formation of the planet. The other hypothesis suggests that Earth accreted wet, from planetesimals or embryos already containing water-bearing minerals. Water vapor is the most abundant gas erupted from volcanoes. This observation is consistent with the hypothesis that the hydrosphere derived from melting water-bearing mantle minerals and erupting water vapor through volcanoes. Atmosphere composition changed through Earth history as a result of weathering reactions and the presence of photosynthetic organisms, which consume carbon dioxide and create oxygen.


nelaaney

  • Member
  • Posts: 560
Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

ashely1112

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

An adult male giraffe feeding high up on an acacia An adult male giraffe feeding high up on an acacia
Mononucleosis is caused by the Epstein–Barr virus. Symptoms of the infectious disease are swollen pa Mononucleosis is caused by the Epstein–Barr virus. Symptoms of the infectious disease are swollen pa
Speed of Earth Speed of Earth
Deconvolution fluorescence microscopy yields high-resolution optical sections th Deconvolution fluorescence microscopy yields high-resolution optical sections th
A downward-sloping spark line usually indicates high secondary ignition system resistance or an ... A downward-sloping spark line usually indicates high secondary ignition system resistance or an ...
Gravity on Earth Vs. Gravity in Bed Gravity on Earth Vs. Gravity in Bed
Video: Factors that affect conduction rates (myelination, axon diameter & temperature)

For a complete list of videos, visit our video library