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Stolb23 [73]
3 years ago
13

In very early human history, complex sanitation systems were not needed because settlements were usually very small, like the vi

llage below. However, as cities became larger and population densities increased, one major advancement was the development of _____ which helped to channel waste waters away from human populations more effectively than in the past
Chemistry
1 answer:
abruzzese [7]3 years ago
3 0

Answer:

Filter??

Explanation:

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Convert 22.4 kg/L to kg/mL
liberstina [14]
1 kg/L -------------- 0.001 kg/mL
22.4 kg/L --------- ??

22.4 x 0.001 / 1 => 0.0224 kg/mL
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How do you test for starch in green plant
Sunny_sXe [5.5K]

Answer:

1,Iodine solution is used to test leaves for the presence of starch. ...

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3.The leaf on the left is a variegated leaf

Explanation:

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