Nitrogen & Phosphorus Cycles: Always Recycle! Part 2 - Crash Course Ecology #9
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- เผยแพร่เมื่อ 7 ก.ย. 2024
- Hank describes the desperate need many organisms have for nutrients (specifically nitrogen and phosphorus) and how they go about getting them via the nitrogen and phosphorus cycles.
Table of Contents:
Nitrogen Cycle 1:46
Nitrogen Fixing Bacteria 2:32
Nitrifying Bacteria 3:24
Denitrifying Bacteria 4:34
Phosphorous Cycle 5:16
Lithosphere 5:27
Plants 5:56
Animals 5:56
Decomposers 5:56
Aquatic & Marine Ecosystems 6:24
Sedimentation & Weathering 6:55
Synthetic Fertilizers 7:23
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My only complaint with this video is that there is no image of the cycle. it really helps to see the cycles. viewers could pause and examine them too.
look up one yourself...
i know you could, and i have but i mean, how hard is it to include...they have a graphic animation team....
Abyssal Nocturnus but how hard is it to look one up...?
if you were explaining the ABC's to a child would you show things that started with "A" "B" and "C" but never show the characters of the ABC's?.....I mean im not like mad or anything im just pointing it out..
Sure. that's understandable. but as an adult, if you know that you need visuals to help you understand, is it so hard to search them out rather than have it handed to you like a child would require??
thumbs up if you have a test/exam tomorrow
today m8
I will soon have a test on this, but i am trying to understand this right now, because my teacher does not know how to teach at all
Armyguywizerdo16 i know ur feel bro :'), RESPECT for brothers struggling at school cuz of bad teachers.
I do!!!!
***** AP environmental Science Exam (uh oh gonna faaaail...)
I wish hank was my science teacher.
You bet!
Same
GOOD LUCK GUYS ON YOUR EXAMS TOMORROW MORNING! Remember to eat a balanced breakfast!
Lmao how did you know 😭😂😂
Amina Russ that's why u are here :p
Thank you❤️❤️
Lol wat is dis
How about two Reeses Cups and a Redbull
Honestly, I've almost always had science teachers that don't really explain/teach the material. They usually just tell us what we're supposed to be learning, give us a busy-work activity, and expect us to learn the material at home in time for the next test. Finally, about a quarter of the way into my freshman bio class, I discovered Hank's videos and they've been a total life-saver! Thanks to these videos I have excelled in my science courses despite having lazy teachers and am much better prepared for a future career in science. Thank you for making me love science!
I totally agree !
Mrs. Barr
Lazy teachers suck
Bless you for making these videos. This is what I call a life saving channel...
*Nitrogen.*
(waves around arms crazily)
Same
This video did a better job of explaining this concept than the class I'm actually paying for.
bill nye of 21st century
Correct
+BetaBotReborn Agreed.
HANK HANK HANK *hank green the science fiend*
yes
BetaBotReborn why does hank always sound so sarcastic tho? like "herbivores eat plants" *smirks*
i truly wonder how many grades and students this channel have saved. Im kinda "thank you for my degree as a Biologist".
Love Hank's work so much! speed 0.5 = intoxicated Hank. have fun!
bless this channel
You said more than my textbook has written.
thanks a lot (: I often prefer watching your videos than reading the textbook because you do a better job at explaining
"we pee or poop...or die."
well, that took a grave turn
This video is helping me for my AP Bio presentation, where I need to present all four cycles and teach my whole class about it. Right when I started the video it kept stopping and reloading during the part he was saying, "There's nothing quite so terrible as needing something right in front of you, but not being able to get it." Coincidence at its finest. Anyways, thank you very much Hank, you really helped my understanding!
Ugh the nitrogen cycle is so complicated! Couldn't never have understood it if it hadn't been for Crash Course. Absolute lifesaver
I have finals tomorrow. You saved me. Thank you.
I love you.
GOD BLESS YOUR SOUL, HANK GREEN
When 5 minutes on crash course gives you a clearer understanding of the nitrogen cycle than an hour of bio lesson at school
Thanks for saving a life, crash course
Never thought I would use crash course in sophomore year of college
I started cracking up by of the way he said - "we make our own amino acids, then we can pee.. or poop it out... or... die"
I love his straight-faced sense of humor
I'm currently doing A level biology and I struggle with a couple of learning difficulties so I usually have to constantly learn something over and over until it sticks but with your videos you make it so clear to understand how science works, you've helped me a lot over the year so thank you! I'll probably need you when I go uni too!
*excited face* There it is I can feel it in the air (arms flapping)
I was procrastinating by watching mental floss, and dreading learning about the nitrogen cycle. I was pleasantly surprised with how interesting and helpful you were. How wonderfully ironic that it's two brothers that are the devil and angel on my shoulder.
thank you so much! this video taught me way more in 10 minutes than my bio teacher has in 2 months
literally just watched his insta "official remission" video and opened this
I think I might cry I loved CC so much growing up and love him as a creator so much now
Thank you Crash Course! This helped me a lot before my biology exam!
BothMeAndACamera m
I like chicken
Man this dude talks really quick
That's why it's called crash course
Not Really
LMAO right? i think its also the editing tho, they're like omg!!! half a second without him talking!!!! cut that frame out!
Am I the only one that reads the text book in their head... in Hank's voice and dialect? Just seems to make more sense for some reason.
Hey Mr. Green I was wondering, I'm a freshman in High School AP Enviornmental Science. Could you make a playlist to help APES students study off of your courses for the AP exam? That would be very helpful ;)
I love how excited he seems about everything! It really helps me to stay focused on what's being said. The best guy I found for Economics on TH-cam literally puts me to sleep. Hank's a life saver, thanks!
Thumbs up if you have to watch this video for school
Your videos have always been awesome, but now they're also getting me an A in Honors Biology! Thanks, Hank! :)
r u breathing while talking? ....crazy
Thats why there are breaks in the video probably ahaha
You guys are life-savers, seriously Bio is not an easy subject for me and you guys make it actually understandable! Thank you lots, the A's that I have gotten are because of you guys.
wow i love watching this six days before the AP exam
"Phosphorus wants nothing to do with your air" Love it
Huge thank you to everyone involved in this! Amber, Peter, Michael, Nick, Jesslyn, Hank, Blake, and Brandon, youève all done a wonderful job making this entertaining and informative!
he explains things in a way that instantly gets absorbed in my head... he is good...VERY GOOD!!!
*Throws my textbook away, opens my iPad and starts watching Hank, wishing he was my teacher*
.-.
I got distracted for about 5 minutes from pressing 2 over and over and watching Hank flap his arms and say "feel it right now"
Hank I have an exam tomorrow on this. Thank you again for this past 5 years. Saving the day
I have an Exam in an hour and these videos are saving me 😂
Anyone else spending New Years alone on TH-cam?
For the nitrogen cycle, can plants (not only legumes but also other plants) use ammonia to grow? Cause I learned that the n-fixing bacteria converts N2 into ammonium and then other bacterias convert that into nitrites then nitrates through further nitrification and that is when the plants can use the nitrates in order to grow.
that picture with the many holes just raised up my TRIPPOPHOBIA!!!!!!!!!!!!!!!
I literally just watched this in class today. Thanks -.-
Honestly, crash courses are so amazing! Not only are they super educational and informative, but they're also very entertaining! Keep up the good work!
I had a 200 term word to definition matching assignment for my environmental science class over break. One of the definitions was "a cycle with no atmospheric component" and I was completely stumped. God bless crash course.
This is so entertaining and educating. It's way more fun than science class at school and here I actually learn so much in one video that just as a comparison, at school it would be a month worth of boring classes from textbook. Thanks!! :)
Along with bacteria and symbionts, kudos to the one who created this entire intricately complicated process!!!
You're on TH-cam, never alone! :D
Happy New Year!
Thank God for Hank and CrashCourse!
I've been an avid follower of SciShow and its extensions so imagine my pleasant surprise when I found out my biology professor decided to use several of these CrashCourse videos as part of her class. TH-cam and Science. Beautiful.
Thank you! This summary is very powerful, and saved me an hour of textbook reading. I appreciate the enthusiastic and tasteful real world applications of this theory.
thanks Hank, once again you've saved my project (and also aided my procrastination level xD) your videos are so concise, and yet mange to effectively condense a month of teachings into a few minutes.
I don't how is that possible but you are the only who doesn't make me sleep on this topics
I HAVE AN EXAM TOMORROW AND YOU, SIR, ARE MY SAVIOUR
Great video! Myccohrizae also make phosphorous available, and they are awesome...don't forget them!
Absolutely awesome! Seriously, you make science so much easier than any of the people that have ever taught to my class in person. Not to mention, the colorful graphics and humor lighten the mood. Thanks for saving my grade. :)
I wish you were my science teacher. I picked up more in ten minute here than a month in school
Hank, it's thanks to you and John that I've passed my science and history classes. Thank you so much for my great sophomore year! My Biology and World History finals await next week, but thanks to you I'm pretty confident. :)
Watching this in class LIVE!
thank you for making this stuff not boring at all anymore
Thanks, Hank, for teaching me what our terrible susbstitute couldn't.
You are saving my A level grades for environmental studies
Thankyou so much. My exam is in ten days, you have no idea how much I needed this
Saving this vid to watch repeatedly as I get my head around growing my own foods hybrid-off-grid style. THANK YOU HANK!
Bless this man for helping me pass mid-terms
I like that I ended the year and started the next looking at Hank's face. It is telling of me.
If you burn you garden (after the harvest) will you add more carbon, phosphorous, and nitrogen into the soil for the next year?
these videos are my saving grace
I just finished my study session for a half an hour break with nothing to do. And this shows up, right on the dot. Huzzah! Boredom held off for a bit. :D
subscribing to your channel, explanations aren’t boring and dull and visuals help too 👌
this channel does exactly what it says crash course. Saving me from staying up all night studying the phosphorus cycle
i just played trivia last night and many of the questions in a round about the human body i got because i watched crashcourse biology, so............ thanks!
Who knew I could actually be interested in this stuff?
It is also worth mentioning that there are newly discovered fluxes in the nitrogen cycle. One is called Anammox where bacteria combine ammonium and nitrate together to form diatomic nitrogen that goes back into the atmosphere. DNRA (Desimilatory Nitrate Reduction to Ammonium) is another process where bacteria converts the nitrates into ammonium. DNRA recycles the nitrogen in the soil whereas denitrification releases the nitrogen into the atmosphere. Anammox can combine the the ammonium with the nitrates and releases the nitrogen into the atmosphere.
Thus, there are four pathways after nitrification: Assimilation (plant uptake), denitrification, DNRA, and anammox.
Thank you! You helped me study for finals!
Using CrashCourse to study for the AP Environmental AP exam tomorrow!! Thanks Hank!
I'm glad I knew all about the Nitrogen cycle due to keeping aquariums for most of my adult life! I'm not so dumb after all!
"Nitrogen is awesome and everywhere... and elusive and deserving of your respect."
That summarizes my love life.
You bring joy to my life
I recommend that you viewers have images of the two cycles on different tabs so you can follow along.
As a marine reef aquarist, I am extra fascinated by this episode.
thank you
Where were you when I was in high school! quick easy to understand if I have a question I can just google it.
I find my self sitting here being ridiculously excited by all the neat stuff that bacteria is doing all around me and within me right now!
It feels so slow once you go back to 1x speed after experiencing 2x speed for these videos
“Water, water, everywhere
And all the boards did shrink
Water, water everywhere
Nor any drop to drink.”
I didn't expect it to be that amusing.
I had to put this on slower speed just to keep up with his voice while all the facts absorbed into my head xD
I really love these vids. Honestly never cared much about ecology, nor did I think I would find it interesting but I'm enjoying this series quite a bit.
writing a paper on this! Thanks this helped a lot!
nitrogen is an element, which means that it has a specific identity determined by its number of protons. if you changed that number, by adding or removing protons, it'd stop being N and become something else.
when you triple-bind two atoms of N you get one N2 molecule (called 'molecular nitrogen'). The common, vernacular name for N2 is 'nitrogen gas'.
It is analogous to oxygen, O, which when double-bound to another O becomes O2 ('molecular oxygen', vernacular 'oxygen gas' or simply 'oxygen').
I'm studying for the AP exam and all I'm seeing is acts, laws and treaties... a Crash Course would be helpful! :)
"Thanks bacteria! We owe you one" is bye far one of the best things I've ever heard
I'm doing this for extra credit in science and this is entertaining and very informational..!
You know you're screwed when you have a course final right around the corner and you're watching Crash Course at 2X speed...