Answer:
A.
Explanation:
Pangaea or Pangea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras.
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Your question: Permeable rock layers or sediments that transmit groundwater freely are called _________.
Your answer: <span>Permeable rock layers or sediments that transmit groundwater freely are called aquifers.
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D. Cambodia (mostly), Thailand, Vietnam
Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds.
Water pollution affects the entire biosphere – plants and organisms living in these bodies of water. In almost all cases the effect is damaging not only to individual species and population, but also to the natural biological communities.
