The main sources are humans which is why it is stated that the global warming is man made. The levels have increased beyond all measure, increasing since the 1950s by a 100 CO2 parts per million, and it keeps increasing by 2ppm on a yearly basis. The statistics from the industrial revolution era are not much different and show how much we've increased the CO2 in modern times.
I belive it it O because <span>An O horizon has at least 20% </span>organic matter<span> by mass. Two main scenarios result in the formation of an O horizon: saturated, </span>anaerobic<span> conditions (wetlands) or high production of leaf litter in forested areas. Anaerobic conditions slow the </span>decomposition<span> process and allow organic material to accumulate. An O horizon can have various stages of decomposed organic matter: highly decomposed, sapric; moderately decomposed, hemic; and minimally decomposed, fibric. In a fibric O layer, plant matter is recognizable (e.g., it is possible to identify a leaf). Sapric material is broken down into much finer matter and is unrecognizable as a plant part. Hemic is in between sapric and fibric, with some barely recognizable plant material present. It is possible to have multiple O horizons stacked upon one another exhibiting different decomposition stages. Because of their organic content, these horizons are typically black or dark brown in color. The dominant processes of the O horizon are </span>additions<span> of organic matter, and </span><span>transformations </span><span>from fibric to sapric
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Answer:
The answer is A. Cementing....
Explanation:
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False- the glaciers still do just the effects noticed from the past was over a long time. It takes a long time for that to occur
Answer:
La geografía turística tiene un gran aporte a nuestra vida.
Explicación:
La geografía turística tiene un gran aporte a nuestra vida en el territorio porque esta geografía mejora el nivel de vida de las personas que viven en esa zona geográfica apta para el turismo. También contribuye en los procesos de desarrollo de nuestra ciudad y en las regiones de nuestro país porque se construyen más edificios para la estadía del turista y el turista viene de diferentes países y el país gana más dinero con estos turistas y potencia su economía.