According to the diversity-stability hypothesis:
A. Genetic diversity is the most important part of ecosystem stability.
B. A loss of any species from an ecosystem leads to an approximately equal decline in stability.
C. The loss of a few species from an ecosystem does significantly affect ecosystem functioning.
D. Losing even a few species from an ecosystem causes a drastic decline in ecosystem stability.
E. Every species has an important role in ecosystem function, but we cannot predict the effect of species loss.
B. A loss of any species from an ecosystem leads to an approximately equal decline in stability.
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Influenza virus adheres to the epithelium of the respiratory system with the aid of ________ and ________ found in its envelope spikes.
What will be an ideal response?
A cell with 22 chromosomes enters meiosis, and by the end of the process has produced ________ cells with ________ chromosomes each
a. 4 / 11 b. 2 / 11 c. 2 / 22 d. 4 / 44
Fragments of DNA can be separated by electrophoresis according to _____
a. sequence b. length c. species d. composition
In 2003, Japan restricted imports of beef from the United States because of fear of mad cow disease. This is an example of
a. an anti dumping measure. b. protecting an infant industry. c. a voluntary restraint measure. d. a technical barrier.