What is meant by the term "contamination?"
A. The concentration of a toxic substance is above natural levels.
B. The concentration of a toxic substance is harmful to humans.
C. The concentration of a toxic substance is harmful to all organisms.
D. The concentration of a toxic substance is not above natural levels.
Answer: A
You might also like to view...
Describe the features created by glacial erosion that you might see in an area where valley glaciers recently existed
What will be an ideal response?
Three-dimensional views of elevation data are called ____
a. visualization models b. GISs c. digital elevation models d. raised projections
The air inside a room is at a temperature of 18.3°C and has a mixing ratio of 5.2 g/kg. What is the relative humidity?
What will be an ideal response? __________ %
Choose the answer that places the hurricane at its proper position with respect to overall storm size
A) tornado, mid-latitude cyclone, hurricane, thunderstorm B) thunderstorm, mid-latitude cyclone, hurricane, tornado C) hurricane, mid-latitude cyclone, tornado, thunderstorm D) mid-latitude cyclone, hurricane, thunderstorm, tornado