Steel and chemical industries are major water polluters primarily because they
A) are major users of municipal sewage systems.
B) release runoffs of pesticides.
C) generate large amounts of wastewater.
D) require small amounts of water in the manufacturing process.
E) generate superheated steam.
Question 2
Water polluted by a farmer's poor irrigation control of fertilized lands is an example of
A) nonpoint source pollution.
B) point source pollution.
C) biochemical oxygen demand pollution.
D) municipal sewage pollution.
E) industrial pollution.
The major types of plant nutrients and their sources.
Walruses leaving the water
The Chemical Structure of DNA DNA is composed of nucleotide pairs.
Water on Mars!
Coronary arteries and major vessels (A) anterior (B) posterior.
Major biosynthetic roles of some citric acid cycle intermediates