That the deep sea could not support life was proven wrong when:
a. Alvin was able to explore the ocean depths.
b. the observations from the Challenger expedition were reported.
c. organisms were discovered while repairing the transatlantic telegraph cable.
d. the development and use of robotic submersibles began.
e. living organisms were found in the Gulf of Mexico dead zone.
C
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The analysis of only one STR is needed to obtain a DNA profile that is statistically unique to a given individual
a. True b. False Indicate whether the statement is true or false
Which of these ecosystems has the lowest productivity?
A. tropical forest B. temperate forest C. savanna D. open ocean E. lakes
How does systemin cause the activation of the wound response in tomato plants?
A. It binds directly to jasmonic acid. B. It directly signals gene expression. C. It induces the production of tannins. D. It induces a jasmonic acid signaling pathway in certain cells. E. It triggers genes that are able to signal the plant that mechanical injury has occurred.
Which one of the following quantities best represents the respiratory heat lost by plants in an ecosystem?
A. gross primary productivity B. net primary productivity C. gross primary productivity - net primary productivity D. gross primary productivity - standing crop biomass E. gross primary productivity - secondary productivity