Common forms of air pollution include smog, acid rain, greenhouse gases, and particulates. What is the main source of these pollutants?

a) burning fossil fuels
b) chlorofluorocarbons
c) hydrocarbons
d) eruption of volcanoes


Ans: a) burning fossil fuels

Biology & Microbiology

You might also like to view...

How much of the available sunlight energy is usually converted into an ecosystem's gross primary productivity?

a. 1 % b. 2 % c. 5 % d. 10 % e. 25 %

Biology & Microbiology

Which of the following pairs indicates the closest

macroevolutionary link among the animals according to the evolutionary history tree in the text? a. flatworms; roundworms b. sponges; cnidarians c. arthropods; annelids d. arthropods; roundworms e. echinoderms; mollusks

Biology & Microbiology

The ________ connects the kidney to the bladder

A) collecting duct B) renal capsule C) urethra D) ureter E) fallopian tube

Biology & Microbiology

A ________ mutation does not alter the amino acid sequence of the resulting protein.

A. nonsense B. silent C. missense D. None of the choices are correct.

Biology & Microbiology