WATER PURIFICATION

WATER PURIFICATION METHOD 1

• The first way humans purify water is to boil it.
• By boiling water it removes bacteria, viruses and parasites that are unsafe for human consumption.

WATER PURIFICATION METHOD 2

• The last way humans purify water is the sand method.
• This filters water because as the water passes from top to bottom, some of the larger particles get stuck on the top. The smaller particles go through and get eaten by tiny organisms, including bacteria and protozoan. The rest of the clean water continues, which is safe to drink.

WATER PURIFICATION METHOD NUMBER 3

• The first natural was the earth purifies water is..
• When muddy water flows from a plowed field, most of the bacteria gets caught by weeds and grass. There will still be a little mud in the water but it isn't harmful.

WATER PURIFICATION METHOD 4

• The last natural way the earth purifies water is..
• Aquatic plants in ponds absorb co2 that releases oxygen into the water, they also reduce algae and help make clearer water.