El Nino is a climate cycle where the temperature of the Pacific Ocean changes because of movements of air and ocean currents. During this period, the trade winds in the south weaken, causing the warm water to move from the Western region to the Eastern region.
El Nino climate cycle begins when warm water in the western tropical Pacific Ocean shifts eastward along the equator toward the coast of South America.
Opposite of El Nino is La Niña when the waters of the tropical eastern Pacific are colder than normal and trade winds blow strongly than usual.
The control of a pest by the introduction of a natural enemy or predator.
Hopefully this helped and that it's correct ;)
Gravitron is a hypothetical String Theory Weightless Particle.
Lynn Margulis and Karlene Schwartz, in their book The Five Kingdoms (W.H. Freeman, 1998), struggled heroically to justify the Protista (they preferred the term Protoctista) kingdom. "Undulipodia (aka flagella) were present in common ancestors to all the phyla, even before mitochondria, given that the anaerobic archaeprotists bear them." However, a sentence later they admit that "in some phyla, all members bear undulipodia, in other phyla, they are absent..." It seems a shaky foundation on which to build a kingdom. All human cells are fathered ultimately by sperm, which bear undulipodia, but no one has suggested that humans are therefore protists.
