« previous next »

Author Question: A galaxy is: a. a thin cloud from which a sun and planets can form. b. a large diffuse cloud of ... (Read 68 times)

Redwolflake15

  • Hero Member
  • *****
  • Posts: 569
on: Aug 22, 2018
A galaxy is:
 a. a thin cloud from which a sun and planets can form.
 b. a large diffuse cloud of gas.
 c. what forms in the center of a cloudlike sphere of gases that flattens and condenses.
 d. a huge rotating aggregation of stars, gas, and other debris held together by gravity.

Question 2

Extrasolar planets, those planets that are outside our solar system:
 a. have not yet been discovered.
 b. are being discovered regularly.
 c. are certainly not at all like Earth.
 d. do not exist.


fwbard

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Aug 22, 2018
Answer to Question 1

d

Answer to Question 2

b


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants. Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants.
The skimmers or perchers and their relatives form the Libellulidae, the largest dragonfly family in The skimmers or perchers and their relatives form the Libellulidae, the largest dragonfly family in
Covalent Bonding Can Form Compounds Covalent Bonding Can Form Compounds
A standard employment application form may be used. A standard employment application form may be used.
Cloud Types: Vertical Development Cloud Types: Vertical Development
Planets Planets
Video: Segmentation and migrating motility complexes & Gastroileal reflex

For a complete list of videos, visit our video library