Agroup of scientists examined a meteorite from mars and found a carbon-rich substance that is produced when microorganisms decay. they concluded that the meteorite provided evidence there was once life on mars. why is this an emerging idea?

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

Acommon kind of mechanical weathering is called

What is the farthest destination to date for a human spaceflight mission?