The introduction of a foreign species into an area where it is not native is called:a
parasitization.
b. infestation.
c. fragmentation.
d. biotic pollution.
e. commercial harvest
d
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The main steps of the nitrogen cycle are:a
nitrogen fixation, nitrification, assimilation, digestion, and denitrification. b. nitrigenation, nitrification, assimilation, ammonification, and denitrification.
c. nitrogen fixation, nitrification, assimilation, ammonification, and dinitrification. d. nitrogen fixation, nitrification, assimilation, carbonation, and denitrification. e. nitrogen fixation, oxidation, assimilation, ammonification, and denitrification.
Flagellated cells can
A) attach to surfaces more effectively because of the flagella. B) move the cell through fluid. C) move internal organelles more efficiently than nonflagellated cells. D) divide more quickly than nonflagellated cells.
The developmental fate of each cell is determined by chemical interactions among cells in a process called ________
Fill in the blank(s) with correct word
What are the "seed leaves" that grow from bulges on the embryo called?
A. Ovules B. Embryo sacs C. Radicles D. Cotyledons E. Petioles