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Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a historic mean sea level. In geodesy, it is formalized as orthometric height. The zero level varies in different countries due to different reference points and historic measurement periods.
The intertidal zone or foreshore is the area above water level at low tide and underwater at high tide; in other words, it is the part of the littoral zone within the tidal range. This area can include several types of habitats with various species of life, such as sea stars, sea urchins, and many species of coral with regional differences in ...
It is the second highest mountain of the Philippines at 2,941 metres (9,649 ft) above sea level, second only to Mount Apo of Davao at 2,956 m (9,698 ft) and slightly higher than Mount Pulag of Luzon, the third highest at 2,928 m (9,606 ft). [1] The mountain is regarded by the Talaandig tribe of Lantapan as a sacred place.
With a few exceptions, the shelf break is located at a remarkably uniform depth of roughly 140 m (460 ft); this is likely a hallmark of past ice ages, when sea level was lower than it is now. [ 11 ] The continental slope is much steeper than the shelf; the average angle is 3°, but it can be as low as 1° or as high as 10°.
The Gulf Coast gained its present configuration during the most recent glacial period approximately 18 ka (thousands of years ago). Low global sea levels allowed the Texas mainland to extend significantly farther south than it does presently, and the Trinity River had carved a 170-foot (52 m) deep canyon through present-day Bolivar Roads (the exit of the Houston Ship Channel) on its way to the ...
Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere. Earth's early atmosphere consisted of accreted gases from the solar nebula , but the atmosphere changed significantly over time, affected by many factors such as volcanism , impact events , weathering and the evolution of ...
The highest point in the watershed of the Amazon is the second biggest peak of Yerupajá at 6,635 metres (21,768 ft). The Amazon River Basin occupies the entire central and eastern area of South America, lying to the east of the Andes mountain range and extending from the Guyana Plateau in the north to the Brazilian Plateau in the south.
Sibuyan is a crescent-shaped island, the second largest in an archipelago comprising Romblon Province, Philippines.Located in the namesake Sibuyan Sea, it has an area of 445 square kilometres (172 sq mi) and has a total population of 62,815, as of the 2020 census.