Dam (n) – a natural or man-made barrier across a
river or stream that holds and controls the natural flow of water.
Decompose (v) – to separate into parts; to rot or
Decomposition (n) – decay of plant or animal
Desalinize (v) – to remove salt and other
minerals, usually from sea water.
Desalination (n) – the process of removing salt
and other minerals, usually from sea water.
Desert (n) – an area of land, often sandy, that
has no rainfall, extreme temperatures and sparse vegetation.
Dolphin (n) – Any of various marine mammals
related to the whales but generally smaller and having a beak like
Drought (n) – a prolonged period of abnormally dry
weather, with little or no rain, that results in a shortage of water
which is severe enough to impact people, crops or the environment.