Which of the following statements accurately describes gross and net primary production?
A) Gross primary production takes into consideration autotrophic respiration, while net primary production does not.
B) Gross primary production involves plants, while net primary production involves animals.
C) Gross primary production is always greater than net primary production.
D) Net primary production is always greater than gross primary production.
C
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Snow avalanches tend to move down tracks called ________
Fill in the blank(s) with correct word
Which of the following is an adaption response to climate change?
a. replacing incandescent light bulbs with LED bulbs b. increasing fuel efficiency of new automobiles c. Pacific island nation-building higher seawalls d. building a nuclear power plant to replace an outdated coal-burning power plant
Hydrogen may be a future energy source to power vehicles.
Answer the following statement true (T) or false (F)
How can a half-life be used to tell the age of a sample?
A. The ratio between the radioactive form and stable form varies regularly with time. B. The amount of radioactive form depends on the amount of radiation in the surroundings. C. The half-life of an isotope is constant. D. The ratio between the radioactive form and the stable form depends on the archaeological record. E. both C and D