Question

question 3 (4 points)select all the examples of water pollutiona fertilizerb heated waterc sewage leakd sediment (sand and small rocks)question 4 (3 points)which of these are examples of point source pollution.a a volcanob a drain pipec cars driving in a big cityd a smokestack

Explanation:

For Question 3:

• Fertilizer runoff introduces excess nutrients, causing eutrophication.
• Heated water (thermal pollution) disrupts aquatic ecosystems.
• Sewage leaks introduce pathogens and contaminants.
• Sediment clouds water, harming aquatic life and habitats. All are water pollution examples.

For Question 4:

• Point source pollution comes from a single, identifiable source. A drain pipe and smokestack have specific discharge points. A volcano is natural, and car emissions are non-point source.

Answer:

Question 3:

a. Fertilizer
b. Heated water
c. Sewage leak
d. Sediment (sand and small rocks)

Question 4:

b. a drain pipe
d. a smokestack