Which of the following factors would make the strongest contribution to global climate change?
A. over-harvesting of wild species for consumptive value
B. large-scale deforestation
C. an increase in soil erosion leading to siltation of rivers and estuaries
D. disruption of the waste recycling by decomposers
E. drainage of wetlands producing a disruption of water purification
Answer: B
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The famous Miller-Urey experiments provided crucial support for the ____ hypothesis
a. endosymbiosis b. Oparin-Haldane c. RNA World d. Dickerson oxidizing atmosphere e. hydrothermal vent
The five-toed limb of stem reptiles was modified into a limb suitable for digging. This is an example of ____
a. convergent evolution b. morphological divergence c. analogous evolution d. morphological convergence e. distal modification
Suppose you are trying to estimate the following regression: Yi = ?0 + ?1X1i + ?2X2i + ?3X3i + Ui, with an instrument for Zi for X2i. All of the following variables will be included (on the right- and left-hand side of this regression) in the first stage of two-stage least squares except for which one?
A. Yi B. X2i C. X1i D. X3i
These examine patterns within populations to find a correlation between a variable and its suspected effects
A) Ecosystem
B) Informed consent agreement
C) Epidemiologic studies
D) Critical thinking
E) Homeostasis
F) Metabolism
G) Placebo
H) Theory
I) Hypothesis
J) Adaptive trait