« previous next »

Author Question: In age, the surface of Venus is much ________ than even the lunar mare. Fill in the blank(s) with ... (Read 42 times)

karateprodigy

  • Hero Member
  • *****
  • Posts: 550
on: Jul 27, 2018
In age, the surface of Venus is much ________ than even the lunar mare.
 
  Fill in the blank(s) with correct word

Question 2

If we say that a galaxy has a lookback time of 1 billion years, we mean that ________.
 
  A) it was 1 billion light-years away when the light left the galaxy
  B) it is now 1 billion light-years away
  C) its light traveled through space for 1 billion years to reach us
  D) it is 400 million years old


tofugiraffe

  • Sr. Member
  • ****
  • Posts: 319
Reply #1 on: Jul 27, 2018
Answer to Question 1

younger

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Emphysema. (a) Illustration comparing normal lungs and emphysemic lungs. The inserts illustrate how Emphysema. (a) Illustration comparing normal lungs and emphysemic lungs. The inserts illustrate how
Surface Features on Titan Surface Features on Titan
viable surface sampling using contact plates viable surface sampling using contact plates
Surface Salinity of the Oceans Surface Salinity of the Oceans
Airflow Associated with Surface Cyclones and Anticyclones Airflow Associated with Surface Cyclones and Anticyclones
The volume of a well is 40.0 ft3. How many kilograms of concrete will it take to fill the well ... The volume of a well is 40.0 ft3. How many kilograms of concrete will it take to fill the well ...
Video: Cardiac Cycle (Part 3 of 4)

For a complete list of videos, visit our video library