How would you calculate the net primary productivity of an ecosystem?
What will be an ideal response?
You would subtract the energy used for cellular respiration from the gross primary productivity. Gross
primary productivity is the rate that plants convert solar energy into chemical energy.
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Which of the following is characteristic of animals?
(a) heterotrophy. (b) autotrophy. (c) photosynthesis. (d) both b and c.
The figure above is an example of
A. punctuated equlibrium.
B. anogenesis.
C. gradualism.
D. speciation based on sexual selection.
E. anogenesis and speciation based on sexual selection.
In_______, cells are tagged with a fluorescent dye and injected into a flowing, progressively narrowing stream of fluid, forcing one cell at a time through a laser beam that scatters its fluorescence to a detector.
What will be an ideal response?
Which of the following structures is the location of gas exchange between the inhaled air and the blood?
A) trachea B) bronchioles C) alveoli D) bronchi E) pleura