Author Question: What percentage of marine pollutants originates from human activities on land? a. 25 b. 50 c. 75 ... (Read 67 times)

tiffannnnyyyyyy · **on:** Aug 22, 2018

What percentage of marine pollutants originates from human activities on land?
a. 25
b. 50
c. 75
d. 90

Question 2

Why is the ozone layer important?
a. It insulates Earth.
b. It increases the temperature.
c. It protects Earth from ultraviolet rays.
d. It stabilizes the atmospheric layers.

laurnthompson · **Reply #1 on:** Aug 22, 2018

Answer to Question 1

ANS: C
A pollutant causes damage by interfering with biological processes of an organism. There are various
rates a pollutant can impact an organism. Information can be found in the section Marine Pollutants
May Be Natural or Human Generated.

Answer to Question 2

ANS: C
If the ozone layer were to weaken, organisms would receive disruptive levels of ultraviolet light. This
would affect the plankton growth in the ocean which also affects every food web in the ocean.
Information can be found in the section Human Activity is Causing Global Oceanic Change.