« previous next »

Author Question: True or False: The most distinctive chemical and physical boundary within Earth is between the ... (Read 60 times)

Anajune7

  • Hero Member
  • *****
  • Posts: 574
on: Jul 16, 2018
True or False: The most distinctive chemical and physical boundary within Earth is between the mantle and core.
 
  Indicate whether this statement is true or false.

Question 2

Although spectacular collisions like comet Shoemaker-Levy 9 impact with Jupiter in 1994 provide evidence that planetary accretion is still occurring, near all the mass of the solar nebula now resides in the sun and planets.
 
  When did Earth, for the most part, attain its current mass and volume?
  A) 65 million years ago
  B) 12,000 years ago
  C) it hasn't
  D) 4,500 million years ago


Jane

  • Sr. Member
  • ****
  • Posts: 309
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: TRUE

Answer to Question 2

Answer: D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Size comparison of Earth and Mars. Size comparison of Earth and Mars.
Evaluating the Physical Characteristics of Urine Evaluating the Physical Characteristics of Urine
Anaerobic glycolysis Chemical Equation Anaerobic glycolysis Chemical Equation
Earth as a System: The Hydrologic Cycle Earth as a System: The Hydrologic Cycle
Earth’s Lithospheric Plates Earth’s Lithospheric Plates
Earth 340 Million Years Ago Earth 340 Million Years Ago
Video: Second Messengers in the Inositol-lipid Signaling Pathway

For a complete list of videos, visit our video library