What did scientists conclude from the data shown in this figure?
A. Active beetles saved energy at higher temperatures.
B. Generating heat led to increased pollination of Philodendron flowers by beetles.
C. Active beetles saved energy at lower temperatures.
D. Resting beetles saved energy at lower temperatures.
E. Resting beetles saved energy at higher temperatures.
A. Active beetles saved energy at higher temperatures.
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The release of neurotransmitter from the presynaptic cell is an example of:
A. phagocytosis. B. endocytosis. C. transcytosis. D. exocytosis.
A nonnative species that was accidentally introduced into Lake Erie by attaching itself to boats is
a. mayflies. b. oligochaete worms. c. phytoplankton. d. salmon. e. zebra mussels.
Which of the following is (are) essential element(s)
in ecosystems? a. oxygen b. hydrogen c. carbon d. nitrogen e. all of these
Which equation represents photosynthesis?
A) 6CO2 + 6O2 + sunlight ? C6H12O6 + 6H2O B) 6H2O + 6CO2 + sunlight ? C6H12O6 + 6O2 C) C6H12O6 + 6O2 + sunlight ? 6CO2 + 6H2O D) O2 + H2O + sunlight ? C6H12O6 + CO2