Four of the following contribute to acid rain. Which one is the exception?
a. ozone
b. burning of coal
c. nitrogen fertilizers
d. burning of gasoline
e. motor vehicles
ANSWER: a
Biology & Microbiology
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The most common cause of low sperm count in males is _____
a. varicocele b. undescended testicles c. testicular failure d. semen disorders e. obstructions
Biology & Microbiology
When members of two different populations breed, which selection pressure has occurred?
a. Genetic drift b. Natural selection c. Sexual selection d. Gene flow e. Founder effect
Biology & Microbiology
All animals are multi-cellular,
a. heterotrophic, and aerobic. b. heterotrophic, and lack motility. c. autotrophic, and have embryos. d. autotrophic, and motile. e. heterotrophic, sexual, and non-embryonic
Biology & Microbiology
The reproductive part of the mushroom is the ______________.
A. Stalk B. Cap C. Hyphae D. All of the above
Biology & Microbiology