General characteristics of hormones are as follows:Hormones are secreted by endocrine cells. Hormones are chemical messengers.The are chemical signals that circulate in the body fluids. The hormones regulate the behavior of the target cells. Hormones, unlike enzymes do not catalyze any reaction.
With a volume of 18,700,000 acre feet (23.1 km3) when full, Fort Peck is the fifth largest artificial lake in the United States. It extends 134 miles (216 km) through central Montana, and its twisting, inlet-studded shoreline has a total length of some 1,520 miles (2,450 km).
Lake Okeechobee is the second largest fresh water lake in the US. The lake covers over 730 square miles and is connected to both of Florida's coasts via the man made Okeechobee Waterway. The Lake is 33 miles wide from north to south, and 30 miles wide from east to west. The Okeechobee Waterway was built in 1937 by the Army Corps of Engineers after two floods caused by hurricanes destroyed the areas surrounding the lake. A series of 5 locks helps boats through the 152 mile long waterway.