What community has the highest biomass per unit of surface area?
a. Rocky intertidal
b. Estuary
c. Sandy beach
d. Deep ocean
ANS: B
The standing biomass per unit of surface area is the highest among any marine community. The high
productivity is due to the availability of nutrients, the high biodiversity, strong sunlight, and the
abundance of niches in the community. Information can be found in the section Examples of Marine
Communities.
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Foliated metamorphic rocks are composed largely of equidimensional grains of minerals such as quartz and calcite.
a. true b. false
One characteristic of the tundra biome is ________
A) Lack of shrubs and grasses B) Lack of flowers C) Lack of trees D) Lack of lichen
Oil and gas represent only 50% of the mineral value presently taken from the seafloor.
Answer the following statement true (T) or false (F)
Seismic P-waves ________ through continental crust relative to oceanic crust.
A. stay the same velocity B. are refracted C. are reflected D. travel slower E. travel faster