X-rays cannot

x-rays cannot pass through earth's atmosphere. which of these is the best location to place a telescope used to observe x-rays from stars?

a-mountain
b-top of building
c-space
d-high-flying aircraft

Abiology teacher asks students to give examples of genetic variations that support the idea that changes in a population’s environment affect genetic variation. which is the least supportive example? a.changes in genetics in human populationsb.antibiotic resistance in bacteria populationsc.pesticide resistance in garden insectsd.changes in the color of the peppered moth population in england