The idealized six-horizon soil profile is not a good representation of all soils because there are big variations, mainly because of the climate factors.
Explanation:
When a soil profile is presented, it is often the one that pretty much everyone knows, the six-horizon profile. This is not a good representation of all soils though, or rather for most of the soils, as the situation in reality is much different. This six-horizon profile is actually idealized, or rather as to how a soil profile should look like.
Lot of the soil types across the world don't have six horizons, or their depths are much different than in the idealized profile. The main reason for this is the climate, as it is the basic factor that later influences all the other ones that influence the formation of soil. We can take the desert soil and polygonal soil as examples:
- The desert soil is very poor in nutrients. The O horizon is either few mm or non-existent. It contains salts.
- The polygonal soil is also very poor in nutrients, with the O horizon also being just few mm. This soil lacks rock base, as well as depth, as it is often only few cm deep.
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Syntax is also collectively known the arrangement of words in a sentence. The correct answer to your questino is B. For that reason it isn't possible for any other answer in this case to be correct because B actually denotes a rather formal way of how you could talk about syntax.
3.Even though there are some dna traces in the mitochondria,it’s won’t really be tested for gcse and mostly the DNAs are found in the nucleus of the cell.
<span>As humans change the way we live on the planet, the way that nitrogen moves around the Earth also changes. Nitrogen atoms may seem small enough to be easily overlooked. We look right through the ones in the air, do we not? Yet recent changes in the nitrogen cycle are causing a very noticeable effect on natural environments and human health. Lakes are clogged with aquatic weeds. Dead zones have formed in areas of the oceans where animals can not survive. Air pollutants that contain nitrogen are decreasing air quality and greenhouse gases that contain nitrogen are becoming more common.</span>
A mixture of equal amounts of two enantiomers <span>is called a racemic mixture.</span>
