Seahorse, any of nearly 50 species of marine fishes allied to pipefishes in the family Syngnathidae. Seahorses are found in shallow coastal waters in latitudes from about 52° N to 45° S. They are distinguished from other fishes by their horselike head,
geothermal energy, anatural resourceofheatenergyfrom withinEarththat can be captured and harnessed for cooking, bathing, space heating, electrical power generation, and other uses. The total amount of geothermal energy incident on Earth is vastly in excess of the world’s current energy requirements...
The St. Lawrence River occupies a geologically old depression that involves three great geologic regions of North America: theCanadian Shield, theAppalachian Mountains, and the interveningsedimentary rockplatform. This ancient setting has been broken up by movements of Earth’s crust along several zones...