What is the primary source of sodium ions to the ocean?
a. contact with fresh crust
b. volcanic vents and outgassing
c. weathering of crustal rocks
d. percolating seawater through mid-ocean rifts
e. dissolution of mineral deposits at hydrothermal vents
c
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Ecologists refer to natural processes (such as forest fires or landslides) that destroy or damage a great deal of existing vegetation as ____
a. gap creation b. mosaics c. succession d. ecological niches e. krummholz
Hurricanes lose their energy when they move over land because of the lack of heat generation.
a. true b. false
Grasshopper transport causes contaminants to accumulate in the low latitudes, close to the equator.
Answer the following statement true (T) or false (F)