The order of elements by volume-fraction (which is approximately molecular mole-fraction) in the atmosphere is nitrogen (78.1%), oxygen (20.9%), argon (0.96%), followed by (in uncertain order) carbon and hydrogen Explanation: google.
<span>pressure which is maintained by the process known as osmosis. </span>
Invasive species cause more damage than some pollutants. Almost half of the native species in America are endangered because of invasive species. Compared to other threats to biodiversity, invasive introduced species rank second only to habitat destruction, such as forest clearing.
<span>Blackland prairies have a unique characteristic of black and
heavy clay soils because of the marine chalks, limestones, and shale that are
found in its composition. When soils reach major rivers and tributaries its
compositions changes into a more sandy soil. These types of environment are
considered to have some of the richest soil in the world where oak, elm, and cedar
trees are commonly found. Blackland
prairies have an elevation that ranges from 300 feet to 800 feet above sea
level. Its topography is mostly composed of rolling hills and level lands. </span>