Aratio used as a scale on a map is called

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation:

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?