Nitrification refers to the production of


Select one:
a. nitrogen gas.
b. nitrate.
c. nitrite.
d. ammonia.
e. ammonium.


b. nitrate.

Biology & Microbiology

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Allopatric speciation occurs because a population

A. merges with another population of the same species. B. becomes geographically isolated and undergoes genetic change. C. becomes extinct and is replaced by a population of a different species. D. shows no genetic change from generation to generation. E. hybrid sterility occurs.

Biology & Microbiology

Greatly increased transnational corporate activity over recent history is one of the driving forces behind the globalization of the world economy

Indicate whether this statement is true or false.

Biology & Microbiology

Finches have lived in Hawaii for

a. 1000 years. b. 100 000 years. c. 4 million years. d. 5 million years. e. 63 million years.

Biology & Microbiology

These sharply pointed teeth on the sides of the mouth tear food

A) molars B) premolars C) canines D) incisors

Biology & Microbiology