DAY 63 (03-04-13)

DAY 63 of SP… North Scituate salt marsh and the new word “HYPOXIA” … Because salt marshes are frequently submerged by the tides and contain a lot of decomposing plant material, oxygen levels in the peat can be extremely low—a condition called hypoxia. Hypoxia is caused by the growth of bacteria which produce the sulfurous rotten-egg smell that is often associated with marshes and mud flats…