Based on the information in the podcast, ocean planets are prime targets in the search for life. However, in the book chapter scientists are also searching Mars for life, even though Mars is not an ocean planet. Why is Mars still considered to be a good candidate in the search for extraterrestrial life? Select the TWO answers that are correct.
Fossil cyanobacteria have been found in rock samples from Mars.
Martian soil releases carbon dioxide under conditions that could support life.
Some photos suggest that there are underground stores of water on Mars.
There are signs that Mars once had liquid water on its surface.
2. What must the probe sent to Europa be able to do in order to effectively detect life on this world? Select the TWO answers that are correct.
It must be able to detect as little as a picomole of organic material in a sample.
It must be able to detect oxygen levels in the atmosphere as low as one part per million.
It must be able to detect as few as 100 cells in a milliliter of water.
It must be able to detect electrical currents as low as 1 amp coursing across a sample.
3. What characteristics make a world a prime candidate to potentially harbor life? Select the TWO answers that are correct.
being geologically active
having oxygen in the atmosphere
the presence of liquid water
evidence of meteor impacts