Primary productivity is measured in terms of gC/m2/day.
Answer the following statement true (T) or false (F)
True
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Which of the following gives the name for electromagnetic radiation that has wavelengths between 0.4 and 0.7 micrometres?
A. visible light B. infrared light C. microwaves D. ultraviolet light
The major reason why large-scale areas of broadleaf evergreen trees occur only in the southern hemisphere is that:
a. only ocean areas are found in the northern hemisphere at the latitude necessary for sustaining these forests. b. broadleaf evergreen species are continentally isolated from the northern hemisphere. c. ocean influence maintains the moderate temperatures needed by this type of tree. d. large areas of these trees in North America were cleared for cultivation.
Where do most of the largest earthquakes occur?
a) Convergent plate boundaries b) Divergent plate boundaries c) Transform plate boundaries d) At volcanic hotspots e) In the center of continents
Which of the following did not form in the hotter inner part of the solar system according to solar system theory?
A) water vapor B) silicates C) oxides D) metal dust