Environmental Science question

TWO PARTS NEEDS TO BE COMPLETED : Assessment below and Quiz is attached.

QUESTION 1

Match each item to the appropriate answer.
Hardness

5 mg/L

500 mg/L

Hudson River food chain

Flood control

Rachel Carson’s Silent Spring

Waterborne disease

Minamata Bay

Disinfectant

Insect-borne disease

A.

loam

B.

0.05%

C.

calcium and magnesium

D.

chlorine

E.

5000 ppb

F.

DDT

G.

malaria

H.

detention pond

I.

PCBs

J.

cholera

K.

mercury

40 points

QUESTION 2

Describe dissolved oxygen, biochemical oxygen demand, and chemical oxygen demand. How are they different? What is the usefulness of knowing the concentration of each of them?
Your response should be at least 200 words in length.

QUESTION 3

What are the benefits of a drinking water treatment plant? In your response, include the origins of municipal drinking water treatment.
Your response should be at least 200 words in length.

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