What is ecology?
the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
Explanation:
Since the 1990s , trade has grown very fast driven by a mix of technological change and policy reforms . With the exception of 2009 trade growth has still remained positive and much bigger than economic growth . This underlined clearly that trade is effective engine for growth.
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Longitude is the angular distance of a place east or west of the Greenwich meridian, or west of the standard meridian of a celestial object, usually expressed in degrees and minutes.
The Polynesians developed the fine art of navigation by stars, inherited from the early arab navigators. Arabians used hand measures to measure the height of the star above the horizon to determine their latitude according to the angle determined.
The more people that are migrating to urban areas (urbanization) needs more crops for the citizens which causes more people to grow crops and without crop rotating or methods to prevent soil degradation. More likely answer is that more industry grows in the urbanized areas and they have poor management of the soil which causes soil degradation<span />
