Name and describe two epa regulations that are in place to protect public water systems

The authority of EPA set several standards for drinking water quality,water suppliers,localities etc.

Explanation:

The regulations are-

1) National Primary Drinking Water regulations-

This regulation is legally possible which is applied in public water system.Primary standards protect public health by controlling the contaminants present in drinking water.

2)National Secondary Drinking water Regulations-

These regulations don't set any proper guideline to control contaminants present in water.

3)Unregulated Contaminants-

The Safe Drinking Water Act (SDWA) is a process through which EPA have to enlist the unregulated contaminants that are require in National drinking water regulations.EPA uses there unregulated contaminants and collect data that will help us to determine that whether we have to regulate that contaminants or not.

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.