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"Our study provides an independent confirmation that the solid Earth is not getting larger at present, within current measurement uncertainties," said Wu.
The scientists estimated the average change in Earth's radius to be 0.004 inches (0.1 millimeters) per year, or about the thickness of a human hair, a rate considered statistically insignificant.
Mass (1024 kg) 5.9736
Volume (1010 km3) 108.321
As shown in this physiographic diagram of the Grand Canyon, just 3300 feet of dated layers demonstrate these layers were laid down sequentially since the middle of the Precambrian era, with even older layers below them. Each layer has been accreted successively since that time.
This color photograph of the Grand Canyon, particularly the varicolored layers in the foreground and the light-colored layers visible in the distance, indicate each layer slowly accreted from passing meteor streams, each with a distinctive chemical composition, for extended periods of time until replaced by other meteor streams with different compositions and colors. This variability in meteor stream content explains the worldwide occurrence of metal and chemical concentrations in various continental locations, and at different time and geological levels. These visible layers in the Grand Canyon tell us the Earth has been slowly created over x-billions of years by accretion of meteorites and meteordust from outer space and illustrate the fundamental principle of slow planetary growth and development that forms the basis of the Accreation Concept.
...well-known evidence the Earth was accreting meteoritic mass from outer space from the 374 meteor streams (10 major streams, 144 minor streams, and another 220 smaller streams) that currently intersect Earth's orbit each year, adding several hundred thousand tons of new mass each year in the form of meteorite fragments and meteordust, primarily dust particles. The volume of these fragments and dust has been grossly underestimated because it cannot be seen or easily measured and blends in with existing soil that accreted earlier.
The Sun's energy is a source of mass that also has long been overlooked or ignored. The massive underground coal beds found on all continents, plus coral growth, and other organic detritus in the oceans, are all products of photosynthesis and conversion of solar energy to solid mass. These volumes are not insignificant.
The answer is actually really simple: Carbon. Photosynthesis is the act of converting CO2 from the air into O2 and a bit of H2O. blogs.msdn.com...
Most of "wood" - the hard substance everyone is familiar with is made of cellulose and other hydrocarbons. Looking at what cellulose is made of, it's easy to see it's predictably, made of C, H and O atoms. It's a chain of glucose mollecules and its basic formula is C6 H12 O6, in which O is the heaviest atom (16) followed by C (12) and H (1). Lignin, the other major substance, is more complex - it's actually a mixture of several similar substances and it constitutes "a quarter to a third of the dry mass of wood". ivoras.sharanet.org...
Lignin or lignen is a complex chemical compound most commonly derived from wood, and an integral part of the secondary cell walls of plants and some algae. The term was introduced in 1819 by de Candolle and is derived from the Latin word lignum, meaning wood. It is one of the most abundant organic polymers on Earth, exceeded only by cellulose, employing 30% of non-fossil organic carbon and constituting from a quarter to a third of the dry mass of wood. As a biopolymer, lignin is unusual because of its heterogeneity and lack of a defined primary structure. Its most commonly noted function is the support through strengthening of wood (xylem cells) in trees. en.wikipedia.org...
It is the radiant energy of the Sun that is converted in to the chemical energy in the tree/pant and utilized for its own purpose . answers.yahoo.com...