1. Salt and sugar are a. insoluble substances.
c. miscible liquids.
b. soluble substances.
d. immiscible liquids.

b sry if im wrong but stay happy

Explanation:

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water pollution kills aquatic life. aquatic life includes algae and other plant life that use photosynthesis. photosynthesis takes   c02 out of the air.  

c02is a greenhouse gas.

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;