Canals and inland waterways, natural or artificial waterways used for ... The lay of the land (topography) and particularly changes in water levels ... inland waterway transport is still more economical than any other kind of transport.
Herbivores in the ocean include the marble parrotfish, pin fish, surgeonfish, damselfish, and rabbit fish.
Earth is composed of four main layers, starting with an inner core at the planet's center, enveloped by the outer core, mantle, and crust. The inner core is a solid sphere made of iron and nickel metals about 759 miles (1,221 kilometers) in radius.
source: nasa
<span>d. a rift between the leadership of the Eastern Orthodox Church in Turkey and the Armenian Orthodox Church.
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A map, I think is the most important, the most basic map shows the physical features of an area, and compass, <span>used for </span>navigation<span> and orientation that shows direction relative to the </span><span>cardinal points...</span>