Examlex
Einstein's equation E = mc2 states that when a particle loses energy,the result is an increase in mass of the particle.
Lakes
Inland bodies of standing freshwater or, in some cases, saline water, usually larger than ponds and contained by land.
Eutrophic
A condition of water bodies, such as lakes and rivers, characterized by an abundant accumulation of nutrients that promote a proliferation of algae.
Mesotrophic
Lakes and water bodies characterized by an intermediate level of productivity, richer than oligotrophic waters but not as nutrient-rich as eutrophic waters.
Oligotrophic
refers to bodies of water, such as lakes, that are low in nutrients and productivity but often high in clarity.
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