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

Author Question: Which of the following describes erosion? A) the excavation of bowl-shaped depressions by ... (Read 28 times)

meagbuch

  • Hero Member
  • *****
  • Posts: 568
on: Jul 27, 2018
Which of the following describes erosion?
 
  A) the excavation of bowl-shaped depressions by asteroids or comets striking a planet's surface
  B) the eruption of molten rock from a planet's interior to its surface
  C) the disruption of a planet's surface by internal stresses
  D) the wearing down or building up of geological features by wind, water, ice, and other phenomena of planetary weather

Question 2

What is the source of luminosity for protostars that have not yet become hot enough for fusion in their cores?
 
  A) light absorbed from nearby stars B) energy released by infalling matter
  C) fusion in their low-density outer layers D) fission from concentrated radioactive elements


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kristenb95

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

B


meagbuch

  • Member
  • Posts: 568
Reply 2 on: Jul 27, 2018
Gracias!

helenmarkerine

  • Member
  • Posts: 324
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Japanese farmers create pentagon-shaped oranges Japanese farmers create pentagon-shaped oranges
Normal red blood cells (RBCs) are flexible and donut-shaped and move with ease through blood ... Normal red blood cells (RBCs) are flexible and donut-shaped and move with ease through blood ...
Fish-shaped Perfume Bottle Fish-shaped Perfume Bottle
Erosion Erosion
Potholes Due to Erosion Potholes Due to Erosion
An auxiliary fuel tank for a helicopter is shaped like the surface generated by revolving the ... An auxiliary fuel tank for a helicopter is shaped like the surface generated by revolving the ...
Video: Endocytosis -Types and Phagocytosis

For a complete list of videos, visit our video library