Ecosystem Ecology: Links in the Chain - Crash Course Ecology #7

[@dotti1356]

I just wanted to say thank you Hank and the Crash Course team. I've used most of your videos as a study tool for my college Biology class. They've really helped me a lot.

[@purple8990]

Hello, fellow classmates, and welcome to your homework.

[@landonbodynskyo4160]

edgy much

[@MiguelAngel_-ue1bm]

Thank you.

[@pinkhoney6702]

im doing this for school im actually ready to find my teachers house and throw hands

[@kennedibrown1643]

that_one kid i feel that

[@parkershaw8600]

my science teacher played this in school yesterday. LIFE COMPLETE.

[@GarethField]

Both thinking of introducing this to my favorite teacher from HS and super stoked that he mentioned jamiroquai!!!!

[@zislandsurvivor138]

me not noticing this was 6 years ago

[@silvahedgehog]

ZIslandSurvivor congrats

[@y_darkstalker2372]

Um if y’all are also doing this for school, does anyone know when he defines ecosystem ecology?

[@pocok5000]

I need a t-shirt with "Just because we are familiar with a concept does not mean we actually understand it" printed on it.

[@laurenbarsotti7602]

He talks to fast for me. I had to watch this over 5 times just to understand the first five minutes of

[@halftimechrome1229]

Or put on the captions

[@curiousfirely]

Coming from an Ecosystem Ecologist, that was a Great explanation of the basics. Thank you Hank for a great resource for my students!

[@PMartinez55]

Crashcouse, thank you. I'm a senior in high school and taking AP Environmental Science. I read the book and listen to the lectures, but these videos definitely help reinforce what the concepts. I'm actually starting to look forward towards the exam in May!

[@MrBomasBalloons]

The arrows in your food web (6:40) are pointing the wrong direction. Arrows should point from what is being eaten to what is eating it… just as the energy flows.

[@cannonfodder8907]

+Mr. Boma's Balloons no he did it right i live near a forest and today i saw a squirrel eat a bear

[@caroldeniselester8671]

+Mr. Boma's Balloons . The arrow means is eaten by

[@adityaguin4913]

+awsomenamehere No, it's wrong because berries don't eat the bear its vice versa and the arrows don't show that correctly

[@adityaguin4913]

Ok I am sorry...didn't realize you were joking....my sincere apologies awsomenamehere

[@cannonfodder8907]

@110952318197591168690 really? you thought i saw a berry eat a bear? *sigh* fine apology accepted but seriously that was dumb af

[@scotthodges6610]

i swear, no one actually searched this up and were all doing this for school

[@pyro4497]

Lol yeah

[@kiryukazuma8089]

Keeps these old videos alive lol

[@jacemeulensteen5698]

Fact

[@TheTonyKono]

The quality of this channel amazes me. I've showed it to numerous professors of mine, and they all love it. Many of them have even taken to using it in lectures on occasion

[@moongem4489]

Great. I will be spending the next few days trying to come up with my own definition of pop music without using a dictionary

[@blackpearlstay]

5 years ago, I came here during my undergrad need a crash course, left a comment, and left. 3 years ago, I was during my masters and needed a refresher and watched this again. I also left a comment and left:DNow I'm doing a PhD in food webs and am back here again. Am I just enjoying this video or have I just not learned anything in 5 years? I don't know. Let me see if I'll come back in 2025 when I should be a Dr. lol

[@a.desousa]

I only occasionally comment stuff on youtube. And I never wrote something like "I Love what you guys do!". Well anyway: I Love what you guys do! Concise, very fine with many different topics summarized in a captivating efficient way. As a scientist myself I think your videos are of great use as a general "textbook" approach to the field of ecology not only for the use of students, but teachers and researchers alike. As a youtuber myself, I hope these type of videos might help presenting the natural sciences field in a more, interesting, funnier, "easier to understand" way so we can use the incredible knowledge we are able to generate, in a more efficient societal way.

[@규현찾으러수만리]

Hank... for my peace of mind.... please.... BREATHE

[@TheFireflyGrave]

If there were an owl that ate hawks, that would make for the greatest KZbin video of all time.

[@SophieIsAGirl]

My teacher linked this video to us to watch for my Biology class. I think my bio class will be awesome!

[@aaditnistala7023]

6:39 Since when did squirells and fish eat bears?

[@annanguyen9231]

Wow... I learnt so much more in this video than all the lessons I had at school -__-

[@PossumNZ1]

I am binge watching this series 2 hours before my exam, dammit.

[@BETANCURPOSADA]

You prepare this videos better than most of my University teachers prepare their classes. Cngratulations for that!

[@hawkxz295]

me : *asks a doubt to the ecology teacher* the ecology teacher, who doesn't know the answer or doesn't want to answer : 6:59

[@TheBirdiebnd]

Hank, thank you so much for discussing bioaccumulation (biomagnification). I wrote a lengthy review article on methyl-mercury in Aquatics ecosystems and how it travels and influences each level in the food web. It is a complicated idea that I have had to explain to many of my students many times, but it is an important concept. Like birds of prey and wolves, etc., humans are also a top predator, and this is a major health concern as well as a major environmental concern. Thank you!!!

[@photogallery94]

My brother isn't doing very well in his 9 grade science classes, and I wasn't the best science student. This is supremely helpful. Thank you so much!

[@salmarahman3241]

Very helpful especially for my exams and I thank that

[@zins_9122]

Who rules the world? Wait for it.....The Mongols!!! . . . Oh wrong subject

[@dr.thaddeusxyank7177]

almost a century ago it was almost hitler

[@MiguelAngel_-ue1bm]

And about six centuries it was the Spanish Empire.

[@TheNinja1111]

I wish things like this would be played on TV in place of 'news' emphasizing all the violent happenings in the headlines 24/7, in turn likely leading to more violence. Think about how much better a state we'd be in. Just a thought. Also, thank you Hank!

[@tobsvonmittelstraum2300]

I hope these guys won't stop. Because if they don't, I'm going to follow them for years.

[@MrBatman201]

helping me get A's in my class all semester, teach it way better then my teacher thanks.

[@ryandowning446]

this video is great, ill be watching them all semester. much appreciated to the people/person that made the video.

[@dannyhayward4650]

I'm studying at university and this has helped me MASSIVELY to remember certain things, thank you!

[@PARVSHAH-ppsu]

Thank you for this amazing lecture.

[@oliviakompany4739]

Thank you for helping me with my science test!!!!!!!

[@natureman494]

its things like this that made me major in wildlife biology the vast complexity of how ecosystems interact with other ecosystems

[@cs-wildcam]

Thanks bud I love these videos! I’m a safari guide in South Africa and this really helps me to gain a better understanding of all the cool stuff around me!

[@jonpro15]

When I set the speed to .5 .. kind of sounds like you're doing a Cosby impression lol

[@nikhalbhola4859]

sounds like he is drunk

[@troysmith7397]

And if you play it at .75 speed, he sounds NORMAL

[@kevindawe1019]

Great job! A very informative and enjoyable summary. Thank you.

[@lilywendt4173]

My science teacher shows these to us and it's wonderful.

[@MariusMuntean]

This was one of the better videos, in my opinion at least. I really liked how you made the argument of being better to eat from the lower food chain. It never occurred to me that the toxicity rises as you go up the food chain(this is how I understood bio-accumulation). Does this mean that humans are toxic or would be toxic for an animal which would primarily consume humans?

[@austinlupo7099]

Here 6 years later and your videos are still amazing. BTW I love you in westworld.

[@lozzawillow3359]

thank you so much hank and the crash course team, i watched your videos during GCSE's then again in my A levels before covid stopped us from sitting the exams, and now i sit here editing my dissertation for my uni degree. thank you so so much for being quicker and better at explaining stuff than half of my teachers. i wish you all the best! :D

[@KAPTKRUNCHitize]

Bioaccumulation. Everything has a name but TIL. Thanks Crash Course!

[@dr.thaddeusxyank7177]

this review helped me a lot, thanks man, you a lot of D class lives

[@weshard1]

Cheers! This gave me a far better way of explaining how toxicity increase as you go up the chain.

[@danchucky-pay2385]

You are an incredible person. God bless you Master of Biology. :B Thank you for doing this the easiest way to learn more about ecology.

[@ianhellam4826]

try watching it with 2 speed. it sounds like he's on a sugar buzz.

[@nickd02]

Thanks a ton for posting this! It helped so much on my homework!

[@rougevexy8848]

the funny thing is your 20+ now and im a teen this is you 5 whole years ago

[@nickd02]

@@rougevexy8848 I'm 17 now, and I don't really understand why I was learning this when I was 12

[@clayfike9405]

0:21 I could name all those! You would have to specify one that I do understand, but I could!

[@chloehannah417]

Wow I just wasted a whole term reading about this when I could’ve just watched a 10minute video

[@luckymatlou6783]

Thank you for the video please continue making more and also exciting... i really do appreciate it.

[@BrotherAlpha]

I would love to see an episode about more unusual ecosystems, like the ones that don't get their energy from the sun.

[@evaander]

All i wanna do is study animals 😭 why are there so many types

[@Vortex1000]

awwwww xDDDD

[@bobguy6046]

Or I wanna study animals and there are so many types to choose from

[@harrySTINKINpotter]

I played "Hanks Face" while watching this. It works surprisingly well.

[@Ront1313]

ecosistem ecology test tomorow! hank you are awesome!

[@_unopablo]

Amazing stuff

[@DailyVikings]

Anybody else find this more useful than their lecture?

[@Ariel-ps8je]

thank you, hank green for saving my science marks

[@daniellekiefer519]

Correct me if I'm wrong - this food web is shown incorrectly. The arrows are pointing in the wrong direction (they point in the direction that energy flows). Right?

[@liampenny9077]

Hank, you sir are amazing :) Thanks bro

[@chubbard78]

I loved the pop music and magic eye poster references!

[@seabassdarapper]

I really love when john talks to his younger self. Not many people are so willing to admit their youthful ignorance.

[@fmahdi7454]

I finally understood, you are talented. Thank you for your help!!!

[@DoeiDenise]

So happy I understand the NO EDGE reference ^.^

[@TheBlackrose1989]

I hate science almost as much as I hate math. I am, unquestionably, a literary and history nerd. Put simply, John's Crash Course contributions pwn me. And, yet, every time there's a new Crash Course Science, or Sci Show vid, I force myself to watch them, to be attentive and absorb the information given. Thank you, Hank Green, for making me learn, even when I don't wanna.

[@kithujoshi]

Thank you this helped so much🤗

[@topumasum]

I've got a major crush on this dude.

[@brianarodriguez5613]

NO EDGE. I love when they make references to other vlogbrother videos. =)

[@kristylee1520]

This is a great channel

[@ME24saken4u]

I'm totally going to ring people's doors and tell them their ecosystem is stupid.This is going to be so much fun :D

[@victorianicholson3963]

Thank you for making this video! (: It really helped me out with Biology! (:

[@TheSecondarkhan]

Hello:)

[@EllenOConnorRK]

I really, super thoroughly enjoyed this. Thank you.

[@serenetsai9217]

Thanks for the subtitles!

[@flickybear33]

Bioaccumulation is actually the amount of a pollutant accumulated by 1 organism. Biomagnification is when a pollutant moves up the food chain getting progressively larger in quantity in each organism as it rises in trophic level (what Hank described with the mercury), easy mistake though ! :) yay for learning!

[@sirjimbothefirst]

Thanks for making me smarter.

[@FieryVigil]

Hank Green, my beloved AP Bio companion. XD

[@faithjones8336]

same

[@Yerrik]

I should modify that statement with an introduction -- "I love this series! And..."

[@MysticMD]

thank you so much! awesome explanation:)

[@bam3344]

Hello welcome to your revision guide

[@masieldlc12]

"those animals that eat the stuff that none of us would touch with a 3 meter pole" XD

[@codemonkeyslikeme]

these vids on ecology should be 20 min long, so fascinating

[@Minifilipinos]

Awesome! I am the 1000th like.

[@Sarmen.Michaels]

Very fascinating episode. Liked, faved and shared.

[@alyssejohnson3987]

SO HELPFUL THANK YOU! Feeling much more prepared for my test now!

[@74Gee]

Your best one to date for sure!

[@pakturkdostlar5309]

please do a video on Ecological Energetics Thanks :)

[@chibeni]

My teacher's forcing us to watch this as a part of a five-page assignment... not sure if I should be happy or not

[@ThePlayfarer]

I wish I could put Hank in my pocket so he could help me in my tests and so we could have discussions about Homoeostasis over Nutella sandwiches.

[@bowierossi3271]

He cracks me up! "Poopies" lol...

[@tehming1]

Love these videos! They really helped me understand te concepts in AP biology. Please keep in maing them!

[@ellyhall8394]

Hank is literally 3 weeks behind the curriculum of my AP Environmental Science class.

[@nuclearshill]

everybody gangsta until the intro is 1:30 in

[@slowitdownforme]

This another reason why I live a plant based diet🤗🌱🌿

[@goode612]

AztecaGodess please tell me this is a joke please

[@goode612]

Also I eat a bacteria diet. Which is called plants and meat and anything else

[@kevinwalters3191]

What is it called when an animal is even higher than quaternary. Grass -> Grasshopper -> Mouse -> snake -> hawk -> owl.

[@tejolson92]

I read in quite a few places that the mercury in the water is changed from a non toxic compound to a toxic compound.

[@carerumer501]

The process Hank described as bioaccumulation is actually biomagnification, bioaccumulation is the build up of a pollutant in an organism over time.

[@pakturkdostlar5309]

Thank u so much for the video and specially details!!

[@meg3421starofworld]

Great video. Thanks

[@MichaelGTadesse]

I like the explanation.

[@Cimorene1969]

Oh, Hank! Of course a stream isn't an island. It's a stream!