What would happen if there were no denitrifying bacteria?
What will be an ideal response?
The atmosphere would have less nitrogen gas available for nitrogen fixation.
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Ecologists using super computers to create and run complex models of ecosystems are using which type of modeling?
a. conceptual modeling b. analytical modeling c. simulation modeling d. individual-based modeling
Given that the atmospheric concentration of CO2 is approximately 300 ppm, is photosynthesis in the field limited by the concentration of CO2?
a. No. b. Yes
Pili may do four of the following. Which is the exception?
a. They help cells attach to surfaces. b. They function in conjugation. c. They extend from the cell surface. d. They can be transferred between cells. e. They function in cell locomotion.
As DDT accumulates in the tissues of carnivores at increasing trophic levels, the concentration increases; this is representative of ________
Fill in the blank(s) with correct word