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

Author Question: Hubble's galaxy classification diagram (the tuning fork) A) explains active galactic nuclei. B) ... (Read 83 times)

mynx

  • Hero Member
  • *****
  • Posts: 555
on: Jul 27, 2018
Hubble's galaxy classification diagram (the tuning fork)
 
  A) explains active galactic nuclei.
  B) shows how galaxies evolve from one form to another.
  C) suggests the existence of black holes.
  D) relates galaxies according to their shapes, but not according to any evolutionary status.

Question 2

Which of the following best describes what we mean by a habitable world?
 
  A) a planet or moon that could support life, if any life happened to be on it
  B) a planet or moon with life
  C) a planet or moon that lies within its star's habitable zone
  D) a planet or moon on which humans could survive if we happened to go there


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

micaelaswann

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

A


mynx

  • Hero Member
  • *****
  • Posts: 555
Reply #2 on: Jul 27, 2018
TY


micaelaswann

  • Sr. Member
  • ****
  • Posts: 314
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Reaction coordinate diagram comparing enzyme-catalyzed and uncatalyzed reactions Reaction coordinate diagram comparing enzyme-catalyzed and uncatalyzed reactions
Structure of the H-R Diagram Structure of the H-R Diagram
The “Flat Head” (Chinook) Indians acquired their name through shaping in infancy, as shown in a diag The “Flat Head” (Chinook) Indians acquired their name through shaping in infancy, as shown in a diag
Diagram Showing How Conduction Aphasia is Caused Diagram Showing How Conduction Aphasia is Caused
Three active forms of vitamin A: all-trans-retinol, -retinal, and –retinoic acid Three active forms of vitamin A: all-trans-retinol, -retinal, and –retinoic acid
Primary Active Transport Primary Active Transport
Video: Digestive chemicals - water, gastric acid, bile & bicarbonate

For a complete list of videos, visit our video library