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

Author Question: The traditional top-down hypothesis of the formation of our galaxy cannot explain a. why not all ... (Read 23 times)

jrubin

  • Hero Member
  • *****
  • Posts: 552
on: Jul 27, 2018
The traditional top-down hypothesis of the formation of our galaxy cannot explain
 
  a. why not all globular clusters are the same age.
  b. why the youngest globular clusters are in the outer halo.
  c. why the oldest stars are metal poor but not completely metal free.
  d. streams and rings of scattered stars in the halo.
  e. All of the other choices are correct.

Question 2

Emission nebulae are also called ________ because they are composed of ionized hydrogen.
 
  a. HI regions
  b. HII regions
  c. Bok globules
  d. HeI regions
  e. reflection nebulae


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

iman

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 27, 2018
Answer to Question 1

e

Answer to Question 2

b


jrubin

  • Member
  • Posts: 552
Reply 2 on: Jul 27, 2018
:D TYSM

adf223

  • Member
  • Posts: 304
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Formation of disease-causing amyloid fibrils Formation of disease-causing amyloid fibrils
Vast reserves of shale gas can be recovered through formation fracturing (“fracking”) Vast reserves of shale gas can be recovered through formation fracturing (“fracking”)
Bone Formation Bone Formation
Sagittal section through brain and spinal cord showing the reticular formation Sagittal section through brain and spinal cord showing the reticular formation
Cell lineage determination in C. elegans vulva formation Cell lineage determination in C. elegans vulva formation
One hypothesis for the evolution of the eukaryotes One hypothesis for the evolution of the eukaryotes
Video: Supine Position

For a complete list of videos, visit our video library