Question

Gravel and charcoal are used for the purification of water.​

Answer 1

❤ANSWER❤

✨Gravel and charcoal are used for the purification of water.

✏First, the gravel layer catches large pieces of debris, such as twigs, leaves, and bugs.

✏Next, the sand layer catches smaller particles, such as dirt and grit, and makes the water look clean.

✏ Finally, the charcoal layer gets rid of bacteria and some chemicals.