What is the function of a channel, where is it located, and what is it made of?

cell anatomy

The primary purpose of any channel of distribution is to bridge the gap between the producer of a product and the user of it, whether the parties are located in the same community or in different countries thousands of miles apart.

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:

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.