« previous next »

Author Question: People have long speculated about whether life exists on Mars. Scientists have e (Read 1712 times)

Mr. Wonderful

  • Hero Member
  • *****
  • Posts: 866
on: Apr 23, 2014
People have long speculated about whether life exists on Mars. Scientists have evidence that on Mars, ______.
A) microbial life exists
B) liquid water has existed in the past
C) the only water present has always been frozen in the polar ice caps
D) water is found only in the form of water vapor


ghost!

  • Hero Member
  • *****
  • Posts: 560
Reply #1 on: Apr 29, 2014
B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Mr. Wonderful

  • Hero Member
  • *****
  • Posts: 866
Reply #2 on: Apr 29, 2014
Wow, thanks!


« previous next »
 

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Defying thousands of years of conventional wisdom, scientists are reporting that it is possible for Defying thousands of years of conventional wisdom, scientists are reporting that it is possible for
Earth Affects People; People Change Earth Earth Affects People; People Change Earth
Women who reported one, two, or three or more major life events in the past 5 years were ... Women who reported one, two, or three or more major life events in the past 5 years were ...
Half-life formula Half-life formula
Summary of Life's Characteristic Summary of Life's Characteristic
Life cycle of a typical flowering plant. Life cycle of a typical flowering plant.
Video: Chemical Messengers Animation

For a complete list of videos, visit our video library