Examlex
Which of the following groups of people were instrumental in the development of categorizing humans into distinct races?
Energy Pyramid
For an ecosystem, a graphic depicting the energy that flows through each trophic level in a given interval.
Trophic Level
The rank in the food chain of an organism, determined by the number of energy-transfer steps to that level.
Biomass
The total mass of organisms in a given area or volume, an important energy source and ecological metric for understanding ecosystems.
Biogeochemical Cycle
A nutrient moves among environmental reservoirs and into and out of food webs.
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