Water can act as either a base or an acid. Water acts as an acid by donating a hydrogen ion when it reacts with a stronger base such as sodium hydroxide. Water may also act as a base when it accepts hydrogen ion when reacting with a strong acid such as hydrochloric acid. This is based on Bronsted concept and definition of a base ( proton acceptor) and acid (proton donor). Such a compound that can act as a base and as an acid is called an amphiprotic molecule.
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Mass movement causes regolith and rock to move down-slope where sooner or later the loose particles will be picked up by another transporting agent and eventually moved to a site of deposition such as an ocean basin or lake bed
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phylum Annelida and and leeches
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The litter-decomposing fungi naturally occupy a niche that combines elements of both primary and secondary decomposition. S. rugosoannulata is a primary decomposer, and can digest a variety of fresh coarse lignocellulosic debris.
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