Which scenario involves scientific research that is most likely free from bias?
a. a company that produces pollution funds climate research.
b. a scientist researches the illegal poaching of his favorite species.
c. a pharmaceutical company researches the effects of one of its cancer treatments.
d. a biologist publishes research that has been reviewed by others outside of her area of expertise.

Based on what you know about the location of the earth in relation to the sun, why is this called the goldilocks zone in other galaxies? a. it's a region that exhibits a weak gravitational pull, thus maintaining a safe distance from the sun. b. it's an area that doesn't experience any major weather events that could cause mass extinctions. c. it's an area that's an optimal distance from the sun for potentially supporting life. d. it's a region that's unaffected by asteroid or meteor impacts.