The largest source of anthropogenic greenhouse gases in the United States is ________, followed by ________
A) electricity generation; agriculture
B) agriculture; transportation
C) agriculture; electricity generation
D) electricity generation; industry
E) electricity generation; transportation
E
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Infant mortality rates include deaths of children under ________ of age.
A. 1 day B. 3 years C. 5 years D. 1 year
The establishment stage of forest development following disturbance can be described as ________
A) tree seedlings becoming established in the gaps in the forest B) tree seedlings germinating on the recently cleared ground C) trees becoming much larger and more widely spaced in the forest D) very large, old trees that are abundant E) large trees continuing to grow with the biomass of the forest increasing
Which of the following volcanoes is generally the largest?
A) Cinder cone B) Dome C) Composite volcano D) Shield volcano
What type of behavior is described as anadromous?
a. Homing behavior to hatch b. Echolocation to find prey c. Stereo smell to find prey d. Schooling as defense e. Migration to freshwater to spawn