What is the definition of “gross primary production”?
a. The total amount of chemical energy produced by autotrophs.
b. Elements and compounds that are required for survival.
c. The amount of energy remaining after respiration that is used to generate plant biomass.
d. The total amount of energy assimilation by heterotrophs.
Answer: A
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Human activity causes most small landslides
Indicate whether the statement is true or false
Which of the following best describes a floodplain?
A) an area that is incidentally flooded when farming or mining operations change the course of rivers B) an area that is periodically flooded because humans have altered the landscape C) a region of land that is periodically flooded when a river overflows D) a region of land that has been deliberately, permanently flooded due to human disturbance, such as in dam building E) an area where flood irrigation of crops is used, such as a rice paddy
Which of the following is characteristic of a buffer?
A) The pH will go down significantly when OH- is added to the buffer. B) The pH will go down very slightly when OH- is added to the buffer. C) The pH will go up significantly when OH- is added to the buffer. D) The pH will go up very slightly when OH- is added to the buffer.
A tornado blows walls from homes. The likely EF categorization of the tornado producing this damage is
A. EF3. B. EF4. C. EF2. D. EF1.