- Видео 40
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Environmental Science - A Changing Planet
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Добавлен 4 авг 2020
This channel contains a wide range of short videos (5-20minutes) focused on introductory college environmental science. The videos are for use in the Introduction to Environmental Studies ENVS 1000 course at CU Boulder during the Coronavirus pandemic but are freely available for other instructors to use as needed. The videos are designed to pair with the foundational content and assessments of A Changing Planet - a fully online streamlined introductory Environmental Science textbook available on the Pearson Revel platform. There are a series of videos describing updates to the the textbook material that will appear in the 2021 new edition.
Tropospheric vs. Stratospheric Ozone
Explains why these two types of ozone have to be considered separately & explains the causes of the 'ozone hole'
Просмотров: 4 770
Видео
Air Pollution Trends
Просмотров 3934 года назад
Trends in Air Quality in the US & evaluation of changes with economic development around the world
The Health Impacts of Air Pollution
Просмотров 1,4 тыс.4 года назад
air pollution impacts on human health
Human Nutrition
Просмотров 4354 года назад
Walks through human calorie requirements and examples of mineral and nutrient requirements.
Nutrient Limitation in Agriculture
Просмотров 4334 года назад
Explores why nutrient limitation occurs in agriculture and why we fertilize agricultural systems.
Accessing FAO Agricultural Data
Просмотров 22 тыс.4 года назад
How to access and use the data on the UN FAO website
Changing US Water Use
Просмотров 4524 года назад
Explores recent declines in US water use and their causes.
Global Freshwater Use & Availability
Просмотров 6734 года назад
Examines trends and patterns in global freshwater availability
The hydrologic cycle; fluxes, reservoirs and residence time
Просмотров 4,8 тыс.4 года назад
Examines the concepts of flux, reservoir, and residence time in the context of the global hydrologic cycle.
Soils
Просмотров 2774 года назад
examines soils, their role in ecosystems, structure and degradation risks
ChiSquare
Просмотров 3444 года назад
explains how to manually calculate a chi square statistical test in excel
Wildfire: climate and management
Просмотров 3364 года назад
explores how climate change and forest management contribute to wildfires
Tamarisk and Biocontrol
Просмотров 3684 года назад
Examines the invasion of Tamarisk in western rivers & the use of a biocontrol to reduce Tamarisk populations.
The opportunities and challenges of urbanization
Просмотров 1,9 тыс.4 года назад
The opportunities and challenges of urbanization
Fitting trendlines to data in Excel graphs
Просмотров 3,9 тыс.4 года назад
Fitting trendlines to data in Excel graphs
Interpreting and Understanding Environmental Health Data
Просмотров 2044 года назад
Interpreting and Understanding Environmental Health Data
Population Growth and the Environment
Просмотров 6014 года назад
Population Growth and the Environment
Projections of Future Population Growth
Просмотров 3494 года назад
Projections of Future Population Growth
Thank you. I think the audio is missing in the final part of the video
Borng
Very helpful....thank very much
Thank you for clarifying 😊
super helpful! thanks!
Actually.
Your videos are very helpfull
this was actually very helpful thanks
Very useful materials. Thank you for sharing 🙏
Omsim
true that
thank you
Thankyou , it was helpful
How to cited/reference this FAOstat data in thesis paper?
That helped, thank you
“We will hit 8 billion sometime in 2021.” Covid-19: 2022, take it or leave it.
😅
Can you point to an explanation on why stratospheric ozone holds together, yet tropospheric ozone breaks apart once it reaches the stratosphere? I'm assuming there are different kinds of ozone? Otherwise, it seems tropospheric ozone floating up into the stratosphere would hold together just the same as the ozone, which already exists in the stratosphere and acts as a UV radiation shield. I guess what I'm wondering is, how do the two different types of ozone differ physically? What do they look like on an atomic level? How are each formed? I realize the answers to these questions are fit for an entirely separate video, so I'm curious if you can point me in the direction of a quality explanation. Thank ya!
Good question. I haven’t seen a clear video explanation but the short answer has three parts. First the molecular structure of ozone is the same throughout the atmosphere but the atmospheric environment is very different. Second, In the stratosphere, there is a massive amount of Uv radiation and different chemistry and so the reactions there are different than those in the troposphere. But in both places ozone doesn’t stick around long before reacting. Third, the reason why the gases and layers don’t mix (much) is because there is limited air movement between the troposphere and the stratosphere because of density differences due to temperature changes vertically in the atmosphere. Most planes fly at the bottom of the stratosphere because it’s much more calm than the troposphere and sits just above the part of the atmosphere where turbulent mixing occurs. That also keeps the gases in separate locations where they play very different roles. Hope that helps a little .
cool
nice explanation
Please use better software to record your screen, Im watching In HD and I cant read anything on the your excel. This assignment is easy and this video might have actually made it more difficult. Get better screen recording software or just make it a worksheet.
This is quite insightful, thank you for sharing this.
This was very useful! Thank you for making the distinction clear.