The distinction between a food chain and a food web is that a food chain describes a linear relationship among trophic levels whereas a food web describes the interconnected relationships among trophic structures in nature.
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Q35: Energy flow in photosynthetic marine ecosystems is
Q36: Marine algae that grow close to the
Q37: Net primary productivity can be estimated as
Q38: The group of marine macroscopic algae with
Q39: In primary production:
A)carbon dioxide is released into
Q41: The most abundant marine macroscopic algae are
Q42: Productivity in polar oceans is:
A)light-limited.
B)nutrient-limited.
C)oxygen-limited.
D)light and nutrient-limited.
E)nutrient
Q43: The percentage of biomass regularly decomposed within
Q44: Nutrient flow in an ecosystem is:
A)bi-directional.
B)cyclical.
C)semi-conservative.
D)top down.
E)unidirectional.
Q45: The efficiency of trophic transfers in ecosystems
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