This topic contains a solution. Click here to go to the answer

Author Question: Process of Science: What evidence do scientists have that supermassive black holes exist? What ... (Read 73 times)

faduma

  • Hero Member
  • *****
  • Posts: 528
Process of Science: What evidence do scientists have that supermassive black holes exist?
 
  What will be an ideal response?

Question 2

The atmosphere of Mars is made mostly of
 
  A) nitrogen
  B) carbon dioxide
  C) hydrocarbons
  D) ammonia



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ansleighelindsey

  • Sr. Member
  • ****
  • Posts: 364
Answer to Question 1

Observations of orbiting stars and gas clouds in galaxies show that they are orbiting extremely massive (tens of millions of solar masses) objects that are invisible.

Answer to Question 2

B




faduma

  • Member
  • Posts: 528
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it


jamesnevil303

  • Member
  • Posts: 337
Reply 3 on: Yesterday
Excellent

 

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

For a complete list of videos, visit our video library