« previous next »

Author Question: The major boundary that occurs at a depth of about 30 km below Earth's surface is the:a. ... (Read 50 times)

Jipu 123

  • Hero Member
  • *****
  • Posts: 569
on: Jul 15, 2018

The major boundary that occurs at a depth of about 30 km below Earth's surface is the:a.
   low-velocity zone.
  b. Moho.
  c. inner core-outer core transition.
  d. core-mantle boundary.
  e. none of the above



Question 2

The composition of the mantle is:
  a. peridotite.
  b. basalt.
  c. granite.
  d. iron.
  e. iron and nickel metal



mfedorka

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 15, 2018
Answer to Question 1

A

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Pollution in the Industrializing Nations has become a major problem. The air in Beijing is hazardous ... Pollution in the Industrializing Nations has become a major problem. The air in Beijing is hazardous ...
The major events associated with the three phases of energy metabolism: the cephalic, absorptive, ... The major events associated with the three phases of energy metabolism: the cephalic, absorptive, ...
Major Adverse Effects of TCAs Major Adverse Effects of TCAs
Major muscles of the arm. Major muscles of the arm.
Major control mechanisms affecting glycolysis and gluconeogenesis Major control mechanisms affecting glycolysis and gluconeogenesis
Major Causes of Death from Infectious Disease Major Causes of Death from Infectious Disease
Video: Second Messengers in the Inositol-lipid Signaling Pathway

For a complete list of videos, visit our video library