What is the unit of increase on the Mohs Relative Hardness Scale?
A) An increase of one unit indicates the rock is twice as hard as the one before.
B) An increase of one unit indicates the rock is seven times as hard as the one before.
C) An increase of one unit indicates the rock is ten times as hard as the one before.
D) The scale is variable.
Answer: D
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A. near the equator (0 to 20 degrees). B. polar regions. C. mid-latitudes (20 to 40 degrees). D. higher latitudes (40 to 60 degrees).
Large terrestrial regions with similar characteristics are
a. ecosystems b. communities c. populations d. habitats e. biomes
The establishment stage of forest development following disturbance can be described as ________
A) tree seedlings germinating on the recently cleared ground B) trees becoming much larger and more widely spaced in the forest C) tree seedlings becoming established in the gaps in the forest D) large trees continuing to grow with the biomass of the forest increasing E) very large, old trees that are abundant