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

Author Question: As far as we know all forms of life on Earth use ____________ as a medium for chemical reactions. ... (Read 62 times)

plus1

  • Hero Member
  • *****
  • Posts: 676
on: Jul 27, 2018
As far as we know all forms of life on Earth use ____________ as a medium for chemical reactions.
 
  a. gaseous helium
  b. gaseous helium
  c. frozen carbon dioxide
  d. liquid water
  e. frozen water

Question 2

The habitable zone around a star is
 
  a. the region on a planet where conditions are acceptable for life to exist.
  b. a region around a star where a planet's temperature would permit the existence of liquid water.
  c. very small for a massive star.
  d. only found around G and K stars.
  e. a region on a young planet where amino acids can begin to form DNA molecules.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

brittanywood

  • Sr. Member
  • ****
  • Posts: 355
Reply #1 on: Jul 27, 2018
Answer to Question 1

d

Answer to Question 2

b


plus1

  • Hero Member
  • *****
  • Posts: 676
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


brittanywood

  • Sr. Member
  • ****
  • Posts: 355
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

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?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

The life cycle of the genus Pinus The life cycle of the genus Pinus
6-8 Earth’s Major Tectonic Plates 6-8 Earth’s Major Tectonic Plates
Chemical weathering Chemical weathering
The Ku Klux Klan forces John Campbell, a black man, to beg for his life in Moore County, North Carol The Ku Klux Klan forces John Campbell, a black man, to beg for his life in Moore County, North Carol
Hydrolysis reactions for some biochemically important phosphate compounds (part 1) Hydrolysis reactions for some biochemically important phosphate compounds (part 1)
The Ames test for potential mutagenicity of chemical compounds The Ames test for potential mutagenicity of chemical compounds
Video: Interview with Person having Obsessive Compulsive Disorder

For a complete list of videos, visit our video library