If sediment is from natural sources, why is it considered a water pollutant?
A) it is an out-of-place resource
B) it is toxic at its source, so it is also toxic in the water
C) it is usually laden with mercury
D) it is only a pollutant if it contains agricultural chemicals
A
You might also like to view...
Today invasive species are commonly transported through the oceans on the hulls of ships.
Answer the following statement true (T) or false (F)
Automobiles are an example of ________ air pollution sources
Fill in the blank(s) with correct word
If any component of the atmosphere causes an increase in the retention of energy, it
A) will leave the planetary albedo unaffected. B) has a positive value of radiative forcing. C) has a negative value of radiative forcing. D) will help mitigate global warming.
In the Pacific Ocean, Walker cell circulation is associated with
A. westward surface winds moving toward the Pacific warm pool. B. eastward surface winds moving away from the Pacific warm pool. C. eastward surface winds moving toward the Pacific warm pool. D. westward surface winds moving away from the Pacific warm pool.