Author Question: Scientists have direct evidence of the Earth's structure to A) the inner core. B) the upper ... (Read 31 times)

folubunmi

  • Hero Member
  • *****
  • Posts: 524
Scientists have direct evidence of the Earth's structure to
 
  A) the inner core.
  B) the upper mantle (250 km (155 mi)).
  C) about 2 km (1.2 mi) from the surface.
  D) 10 km (6 mi) from the surface, based on the deepest well shaft.

Question 2

Which two gases are primarily responsible for the greenhouse effect because of their ability to absorb infrared energy?
 
  A) oxygen and hydrogen
  B) ozone and dust
  C) nitrogen and oxygen
  D) water vapor and carbon dioxide



bhavsar

  • Sr. Member
  • ****
  • Posts: 351
Answer to Question 1

C

Answer to Question 2

D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

For a complete list of videos, visit our video library