Pollutant levels in cities are: Group of answer choices

generally lower than in the suburbs

1.rapidly increasing all around the world

2.generally higher than in rural areas

3.The same as in rural areas because of atmospheric mixing.

4.rapidly decreasing around the worl

What is the lowest output value approached by the function f(x)=2x−5?

What are the similarities and differences in the way geologists and biologists approximate the age of the earth? justify your response in two or more complete sentences.

Which statements about wells are true? check all that apply. a) wells bring groundwater from the unsaturated zone to the surface of the water. b) wells need to be drilled below the water table. c) if water is pumped from a well too quicky, the well may run dry. d) water from wells is generally not safe to drink. e) water gushes from artesian wells due to pressure.