The atmospheric pressure conditions corresponding to the periodic warming of El Niño and cooling of La Niña.
soil with particles 0.002-0.05 mm in diameter
the coarsest soil, with particles 0.05-2.0 mm in diameter
the right, as to fishing or to the use of a riverbed, of one who owns riparian land (the land adjacent to a river or stream)
the process in which soil becomes saltier and saltier until finally the salt prevents the growth of plants; it is caused by irrigation, as salts brought in with the water remain in the soil as water evaporates
a process in which cold, often nutrient-rich, waters from the ocean depths rise to the surface