Knowledge of halophyte plant functions have given scientists clues for developing agricultural plants that might survive in environments that are:
A. extremely wet
B. high pressure areas such as mountains
C. high in toxic wastes
D. extremely cold
E. arid
E. arid
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For a carbon source, chemoorganotrophs generally use compounds such as
A) acetate, succinate, and glucose. B) bicarbonate and carbon dioxide. C) nitrate and nitrite. D) acetate, bicarbonate, and nitrate.
Lizards can control spider populations on Caribbean islands by which density-dependent mechanism(s)?
a. predation only b. competition only c. predation on a common predator only d. predation and competition e. predation, competition, and predation on a common predator
Which of the following is an example of an
interacting effect causing a decline in a species? a. habitat loss of the polar bear b. dodo birds being hunted by sailors c. pollution buildup in the eggs of eagles d. decline in buffalo causing a drop in native clover e. all of these
The adaptive immune system is complex, but it can be summarized in four consecutive stages: i) lymphocyte encounter with an immunogen, ii) development of lymphocyte specificity against that immunogen, iii) 2nd encounter with the immunogen, and iv) development of memory cells.
Answer the following statement true (T) or false (F)