Author Question: Venus's tectonic processes seem to be vertical rather than horizontal. a. True b. False ... (Read 37 times)

awywial

  • Hero Member
  • *****
  • Posts: 577
Venus's tectonic processes seem to be vertical rather than horizontal.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

What is a planetary nebula?
 
  What will be an ideal response?



xiazhe

  • Sr. Member
  • ****
  • Posts: 331
Answer to Question 1

True

Answer to Question 2

A planetary nebula is a shell of gas that has been ejected during the evolution of a medium-mass star through a greatly increased stellar wind. The nebula is visible due to ionization from a central object (white dwarf) with a high surface temperature.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

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?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

For a complete list of videos, visit our video library