Nitrogen & Phosphorus Cycles: Always Recycle! Part 2 - Crash Course Ecology #9
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- Опубликовано: 2 окт 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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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...)
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
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??
I wish hank was my science teacher.
You bet!
Same
*Nitrogen.*
(waves around arms crazily)
Same
Bless you for making these videos. This is what I call a life saving channel...
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".
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
Thumbs up if you have to watch this video for school
This video did a better job of explaining this concept than the class I'm actually paying for.
r u breathing while talking? ....crazy
Thats why there are breaks in the video probably ahaha
You said more than my textbook has written.
"we pee or poop...or die."
well, that took a grave turn
bless this channel
Love Hank's work so much! speed 0.5 = intoxicated Hank. have fun!
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!
thanks a lot (: I often prefer watching your videos than reading the textbook because you do a better job at explaining
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 ;)
*excited face* There it is I can feel it in the air (arms flapping)
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.
Thank you Crash Course! This helped me a lot before my biology exam!
BothMeAndACamera m
I like chicken
*who else has an apes test and has no idea what’s going on?*
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
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.
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"
Your videos have always been awesome, but now they're also getting me an A in Honors Biology! Thanks, Hank! :)
thank you so much! this video taught me way more in 10 minutes than my bio teacher has in 2 months
Never thought I would use crash course in sophomore year of college
I have finals tomorrow. You saved me. Thank you.
I love you.
you're so funny & informative… :)
Hank you splain it really good, but why you aren't using a cicle graphic? an animaded cicle crash course style would be really usefull for this video :/
Anyone else spending New Years alone on RUclips?
Ugh the nitrogen cycle is so complicated! Couldn't never have understood it if it hadn't been for Crash Course. Absolute lifesaver
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.
I literally just watched this in class today. Thanks -.-
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!
*Throws my textbook away, opens my iPad and starts watching Hank, wishing he was my teacher*
.-.
It feels so slow once you go back to 1x speed after experiencing 2x speed for these videos
So my teacher taught nitrogen and carbon cycles but did we'd to learn the phosphorus cycle on our own and we still have a test on all 3. I hate her so much
Who else has to do this for school?
Who else is studying late at night
Do you want to speak any faster?
If you burn you garden (after the harvest) will you add more carbon, phosphorous, and nitrogen into the soil for the next year?
Great video! Myccohrizae also make phosphorous available, and they are awesome...don't forget them!
Thanks you really did help me understand theses cycles this really is helpful. You matter to me for help with school stuff :)
IT'S A CYCLE!! …hahaha
I have an Exam in an hour and these videos are saving me 😂
If out bodies are mostly water then why is hydrogen so much less abundant than oxygen? shouldn't it be almost twice as common?
Oxygen is vastly heavier than hydrogen, so that's why it's more common in our bodies, at least by mass. With regards to the mole-fractions, or the number of atoms itself, oxygen is still more common mainly because O2 exists in our bodies as a valuable compound which we inhale from the atmosphere, whereas H2 is rather uncommon due to its mass. H2, much like helium, is extremely light and therefore rises and floats out of the atmosphere. It's important to keep in mind that there are many, many more molecules and things with stuff.
DJ TATCM Agreed. By mass O wins. By frequency H wins. So, as far as abundance in terms of how much space either would take up in a vessel, O would take up most of the space in that vessel. Plus H is super tinny compared to O.
Okay, that makes sense, thank you for answering.
On top of this, almost 16,000 tons of hydrogen escape into space each year.
Your a life saver :) ...( Not the candy type) lol
#TestTomorrow
Thumbs up if you agree.
I love your videos, it so clarity whith you explication , im sorry for may bad inglish XD
Cramming last minute for the APES test tomorrow 😔
O go so fucking fast do really expect anyone to learn anything in an effective way?
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 thank u crash course...well
Hank thank u so much
soon i'll have A-level exams that this info will come in handy :)
Are your a levels in June ? If so mine are too and yes this channel is amazing :)
Yuppp
cool
wow i love watching this six days before the AP exam
Anyone else IB exams tomorrow? #yay NOT.
It's nice to know I'm not alone in the IB y'know?
Helps give me the strength I need to go on
Are you also writing your exams? Or are you still in year 1?
+Jenna Bakker I'm writing my exams. I just finished with Bio, have you or are you about to take them?
Same, I also finished Bio today
In 2 weeks the torture is over, hang in there :P
This dude talk like HolaSoyGerman but in english!
thank you
Thumbs up if u have to learn it and have no idea what he’s saying
How many times did he say "poop"?
So much better than my freakin textbook or teacher.
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
"Phosphorus wants nothing to do with your air" Love it
You're on RUclips, never alone! :D
Happy New Year!
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!! :)
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
i have to like slow down the speed of the video because he's like Eminem 360
I wish there was a diagram to illustrate it
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 RUclips literally puts me to sleep. Hank's a life saver, thanks!
Good information just slow down. You talk too fast.
Reallly nice explanation thankyou
Loving your videos! I plan on using them at the end of my classes in the university. I will be adding subtitles in portuguese. Is there a way for me to send you the subtitles?
1:14 cant we just drink mineral water guys
GOD BLESS YOUR SOUL, HANK GREEN
Thnx it really helped
Do we really need to let the nitrogen back into the atmosphere? Couldn't decomposers just eat each other until the plants get the nitrogen back? WHY ARE WE PUTTING NITROGEN BACK IN THE AIR IF IT'S SO HARD TO GET IT OUT OF THE AIR IN THE FIRST PLACE? DENITRIFYING BACTERIA, WHAT IN BLUE BLAZES ARE YOU DOING?!
He can sing rap 😂💪🏼
"Of which the main ingredients are - you guesses it - nitrogen and phosphorous"
Even though the most abundant elements in fertilizer happens to be nitrgoen and potassium.
Sure, all fertilizers contain N P & K (nitrogen, phosphorus and potassium), but usually the level of phosphorus is lower than that of potassium.
I'm an educated horticulturist, but hey - what do i know, right?
like, this is awesome and great and very very enlightening, but dude, seriously, TALK SLOWER!!!!!!!
Ohhh, so that's why pee kills grass.
just a question Is this correct? = N2 becomes NH3 then comes in contact with Hydrogen and becomes Nh4+ and then another bacteria turns Nh4+ into No2- (Nitrite) and then the No2- becomes No3- and then No3 - becomes N2 agin? Im so confused
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.
@5:57 every soil ecologists and scientist screamed. Not many organisms that turn Pi into organic P. Hello! did you forget that 90% of terrestrial plants get it form their symbionts in the rhizosphere??? Mycoriza isn't the only class of soil organism that does it ether. wow, that was a bad miss.
writing a paper on this! Thanks this helped a lot!
If nitrogen is so hard to turn into organic compounds, why are Denitrifying bacteria even a thing? WHY DO THEY UNDO ALL THAT WORK?!
Question - When birds like chickens and turkeys eat up little rocks (like the granite grit they sell in stores) then slowly crush up those rocks in their crop (while "chewing" their food), then poop out their little pee/poo packets, do they release trapped phosphorus into a plant available form?
Wow! You talk really fast!!! Great info though, thanks ;)
Amazing videos, thank you Hank
They do! :) It's one of the first biology videos, I think number 2 but i'm not sure. It's why i could understand your question haha.
There is a big push to try and get plants to nitrogen fix themselves via genetic engineering. This is especially useful for crops since nitrogen run-off from fertilizers is pretty devastating to local water systems. (Basically fertilizer makes algae grow, when it dies bacteria decompose it which uses up oxygen, starving the system of oxygen. Fish need oxygen to survive, so they don't survive in those systems).
WAIT WAIT WAIT!!!!! If we know the enzyme responsible for fixing Nitrogen and breaking apart the diatomic molecules why don't we just insert the gene that codes for that enzyme into our crop's leaves so that we don't need to use nearly as much chemical fertilizer; wouldn't that kind of solve the Nitrogen farm run-off /ocean dead zone problem and be both more efficient and cheaper?
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').
(this is nearly entirely unrelated to the video) In response to the idea of that one person being tremendously out of another's league, I think our league as a person (on a scale of 1 to 10, or whatever numbers you like) should consist of an average of three major sections: personality, intelligence, and of course, physical appearance. These would consist of subsections all averaged together, for instance personality could consist of emotional stability, kindness, and the like. The three major
thats a pretty open broad question. i heard some one once say asking what the meaning or purpose of life is analogous to asking what is the purpose of a rock - ie - a bit of a non question.the person was r dawkins, id better say, before someone moans about it. the only thing i can reqally see, is that life universally wants to stay alive, by replicating itself and propagating. this bit is a bit of a big mystery to me, what drives it.
Is there such a thing as nitrogen fixing plants? I know he mentioned that there is nitrogen fixing bacteria that form symbiotic relationship with roots or nodules called legumes, what those be considered nitrogen fixing plants?
if you want to find out about Fritz Haber, also inform yourselves about his wife Clara Immerwahr, important person who lead a very interesting life
that picture with the many holes just raised up my TRIPPOPHOBIA!!!!!!!!!!!!!!!