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

Author Question: In addition to asteroids, ________ impacts also provided the primitive Earth with water and ... (Read 66 times)

urbanoutfitters

  • Hero Member
  • *****
  • Posts: 530
on: Jul 27, 2018
In addition to asteroids, ________ impacts also provided the primitive Earth with water and organics.
 
  Fill in the blank(s) with correct word

Question 2

If a star system 30 parsecs distant is found to be broadcasting intelligent radio signals, then their news is already approximately ________ years old.
 
  A) 10 B) 30 C) 100 D) 300 E) 1,000


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

EAN94

  • Sr. Member
  • ****
  • Posts: 307
Reply #1 on: Jul 27, 2018
Answer to Question 1

comet

Answer to Question 2

C


urbanoutfitters

  • Member
  • Posts: 530
Reply 2 on: Jul 27, 2018
Excellent

TheDev123

  • Member
  • Posts: 332
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

The movement of air and water in sandy soil. The movement of air and water in sandy soil.
Asthma. (a) A normal bronchiole. (b) An asthmatic bronchiole. During an asthma “attack,” the bronchi Asthma. (a) A normal bronchiole. (b) An asthmatic bronchiole. During an asthma “attack,” the bronchi
Surface Water Resources Surface Water Resources
Water caltrop Water caltrop
A single overhead camshaft engine with a timing belt that also rotates the water pump. A single overhead camshaft engine with a timing belt that also rotates the water pump.
The movement of water vapor molecules exerts vapor pressure on surfaces. The movement of water vapor molecules exerts vapor pressure on surfaces.
Video: Atrophy

For a complete list of videos, visit our video library