Euphotic adjective noting or pertaining to the layer or zone of sea water that receives enough sunlight photosynthesis to occur, varying greatly with season and latitude, from 0 to 1200 feet (0 – 360 meters).
Ecosphere also called physiological atmosphere. The part of the atmosphere in which it is possible to breathe normally without aid: the portion of the troposphere from sea level to an altitude of about 13,000 feet (4000meters).
Ecology The planetary ecosystem, including all the earth’s living organisms and the ir physical environment; biosphere.
Hatch To bring forth (young) from the egg. To cause young to emerge from (the egg) as by brooding or incubating
Heating The state of a body perceived as having or generating a relatively high degree of warmth The degree of hotness; temperature: moderate heat The sensation of warmth or hotness: unpleasant heat.
Hotbed Bottomless, boxlike, usually glass covered structure and the bed of ear the it covers, heated typically by fermenting manure or electrical cables, for growing plants out of season.
Hydrography The science of the measurement, description, and mapping of the surface e waters of the earth, with special reference to their use for navigation.
Haploid Pertaining to a single set of chromosomes An organism or cell having only one complete set of chromosomes, ordinarily half the normal diploid number
Haemophilia orHemophilia An inheritable disease, usually affecting only males but transmitted by wom en to their male children, characterized by loss or impairment of the normal clotting ability of blood so that a minor wound may result in fatal bleeding
Radiobiology The branch of biology dealing with the effects of radiation on living matter.
Rainy season One of the two seasons in tropical climates
Red Mud /Red Sludge Is a solid residue product, which is the principal industrial means of refining bauxite in order to provide alumina as raw material
Refinery An establishment for refining something, as metal, sugar, or petroleum.
Renewal The act of renewing
Resin Any of a class of nonvolatile, solid or semisolid organic substances, as copal or mastic, that consist ofamorphous mixtures of carboxylic acids and are obtained directly from certain plants as exudations orpepared by polymerization of simple molecules: used in medicine and in the making of varnishes and plastics. A substance of this type obtained from certain pines; rosin.