Explain how early Indus River Valley civilizations used brick channels.

they used them to transfer many things

Explanation:

Ancient Indus Valley civilizations constructed brick channels for two important tasks. Some channels carried freshwater into the cities for the residents and to fill the public baths. Other channels transported the waste and sewage out of the city to improve the sanitation.

answer; /// i believe its (slavery) to be the correct check luck.

the language of nature was a manifestation from god as he said "let there be light" and there was light the world began to assume visible, comprehensible form.

what ever we know now think of the old vision of creation we can be sure that with out the speaking of word -without language- we would have no science today with its striking power to illuminate the world.