In the fight for the world environment against nitrogen fertilizer Ecology or the state of the environment - Today the number one problem in life on planet Earth. And where you do not look, everywhere legacy of the man.
Nitrogen compounds are vital to humanity, but at the same time, they pollute the air, soil and water, the annual cost of every European in? 740 ($ 1,066).
200 experts from 21 countries and 89 organizations have come to the conclusion that the annual cost of damage by nitrogen pollution in Europe is between 70 and 320 billion euros.
Almost half the world's population depends on food production is possible only because of the synthetic nitrogen fertilizer, and it is still necessary to take measures to reduce nitrogen pollution - emphasizes the editor of the report, Mark Sutton from the Centre for Ecology and Hydrology (UK). - First of all, we should move to the efficient use of fertilizer and manure, and partly to give up meat.
By the way, the meat portion of the conference in Edinburgh (Scotland), which presented the results of the study, have been cut in half.
Nitrogen, constituting about 78% of the earth's atmosphere, poses a threat to soil, water resources, ecosystems and human health only in compounds - for example, in the form of nitrous oxide. Nitrogen is absolutely critical for human well-being, so the challenge is to keep all of its benefits and at the same time to minimize adverse effects, - said at a briefing before the presentation of the report, Robert Watson, chief scientist of the Ministry of the Environment, agriculture and rural areas of the UK. - It is not about giving up fertilizers, and more cautious about their use.
Agriculture accounts for about 80% of emissions of nitrogen. B? Lshuyu part and 40% of all emissions produces livestock (including feed crops). The main threat in this case - the burning of fossil fuels.
According to Mr. Watson, UK emissions of nitrogen oxides were reduced by 60% since 1990, while the use of nitrogen fertilizers - by 19% between 1998 and 2010. Things are going in the right direction, and our report is to say, we must not rest, - concluded the expert.
In the UK in the fight against nitrogen fertilizer is good, but as in the rest of the camp?
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Ecology
With a solid understanding of biology on the small scale under our belts, it's time for the long view - for the next twelve weeks, we'll be learning how the living things that we've studied interact with and influence each other and their environments. Life is powerful, and in order to understand how living systems work, you first have to understand how they originated, developed and diversified over the past 4.5 billion years of Earth's history. Hang on to your hats as Hank tells us the epic drama that is the history of life on Earth.
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Table of Contents
1) Archaean & Proterozoic Eons 01:53
a) Protobionts 03:54
b) Prokaryotes 04:18
c) Eukaryotes 06:06
2) Phanerozoic Eon 06:42
a) Cambrian Explosion 06:49
b) Ordovician Period 07:36
c) Devonian Period 07:48
d) Carboniferous Period 08:13
e) Permian Period 09:10
References and licenses for this episode can be found in the Google document here: http://dft.ba/-2zRD
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