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.
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.
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!
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
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!!!
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.
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
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!
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!
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?
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!
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?
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
There is always a producer, but it doesn't have to be a plant (or other photosynthetic organism.) In the case of the deep sea vents, it's chemosynthetic bacteria. In all cases, it's something that takes inorganic materials and/or energy from the environment and makes something edible.
Not sure if you got a response: -Ecology looks more into the interactions between organisms and other organisms and environmental factors, and ultimately how they influence each other. -Environmental science is the term used to describe how all biological and physical sciences work together as a system. The scope is huge: some of the basic things that tend to be included are biology, geology, oceanography, meteorology, ecology, even economics. The real difference between two is the scope.
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.
Interesting point! Assuming that by earthlings you mean the most widespread of the planet's primate species (or any other earth species that live in colonies), the toxin accumulation hypothesis is an appealing one, however, let me offer an alternative hypothesis: They all (most at least) seem to have managed to enter a pact in wich they agree to not eat each other in exchange for not being eaten. For non-social animals, the cost of combat might be the prevalent factor. I welcome your criticism.
Not all organisms that are autotrophs photosynthesise. There are some which perform chemosynthesis, usually small bacteria that gain energy by breaking molecular bonds and collecting the energy released.
Wow, I didn't know that berries eat bears! Or that salmon eat bears! It's been commented before but the food web's backwards, the arrow's supposed to point to the thing that's doing the eating, not the thing getting eaten.
A small note: Most professional ecologists draw food chain / web arrows in the direction of energy transfer, not who is eating whom. So the arrow should go from the fish to the bear because that's the direction of the energy flow.
The Magic Eye thing is hard!! I think I have it though: There's a horizontal/vertical cross which is medium distance. Then at the top left there's a 'mountain'. At the top right there's a 'valley'. Bottom left is another valley. And at the bottom right there's a circle that's so close it scares you the first time you see it :-P
Pop music is generally describing a line between so called 'art' or classical music, functional music (liturgical and educational), and the music that is consumed by the large masses. Much of the old music that we now consider classical was once pop much including most operas. Much like ecosystems the lines are often blurry and ill-defined.
Sometime pop is a genre within all popular music and is short for bubblegum pop. This genre is mostly defined by what it's not. It isn't rock, country, hip hop, jazz, but it's still clearly popular music.
(2) --> If it's a separate mechanism, it's strange. The problem with being killed and eaten is, obviously, the "being killed" part - once you are dead, it's secondary if you're eaten or buried. So I wonder why earthling evolution developped a "don't eat each other" mechanism instead of a "don't kill each other" mechanism. But the mechanism may have developped much earlier in the evolution of animals in order to prevent predator from self-extinction - a "don't hunt each other" mechanism. --> (3)
I've never had much fun with math and science in comparison to language and history, either. But Hank Green has this amazing charisma and way of explaining things that makes me want to learn about these subjects.
okay i have to read ch 7 in the environment and you book by norm christensen do I have to read the whole long 11 pages of the whole chapter to know about ecosystem ecology or should I just watch the videos on here to learn more about ecosystem ecology?
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.
Hello, fellow classmates, and welcome to your homework.
edgy much
Thank you.
Um if y’all are also doing this for school, does anyone know when he defines ecosystem ecology?
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.
+Mr. Boma's Balloons no he did it right i live near a forest and today i saw a squirrel eat a bear
+Mr. Boma's Balloons . The arrow means is eaten by
+awsomenamehere No, it's wrong because berries don't eat the bear its vice versa and the arrows don't show that correctly
Ok I am sorry...didn't realize you were joking....my sincere apologies awsomenamehere
@110952318197591168690
really? you thought i saw a berry eat a bear? *sigh* fine apology accepted but seriously that was dumb af
He talks to fast for me. I had to watch this over 5 times just to understand the first five minutes of
Or put on the captions
my science teacher played this in school yesterday. LIFE COMPLETE.
Both thinking of introducing this to my favorite teacher from HS and super stoked that he mentioned jamiroquai!!!!
me not noticing this was 6 years ago
ZIslandSurvivor congrats
im doing this for school im actually ready to find my teachers house and throw hands
that_one kid i feel that
Coming from an Ecosystem Ecologist, that was a Great explanation of the basics. Thank you Hank for a great resource for my students!
i swear, no one actually searched this up and were all doing this for school
Lol yeah
Keeps these old videos alive lol
Fact
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!
I need a t-shirt with "Just because we are familiar with a concept does not mean we actually understand it" printed on it.
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
6:39 Since when did squirells and fish eat bears?
Great. I will be spending the next few days trying to come up with my own definition of pop music without using a dictionary
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!!!
Hank... for my peace of mind.... please.... BREATHE
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.
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
My teacher linked this video to us to watch for my Biology class. I think my bio class will be awesome!
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!
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!
Wow... I learnt so much more in this video than all the lessons I had at school -__-
Who rules the world?
Wait for it.....The Mongols!!!
.
.
.
Oh wrong subject
almost a century ago it was almost hitler
And about six centuries it was the Spanish Empire.
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!
this video is great, ill be watching them all semester. much appreciated to the people/person that made the video.
You prepare this videos better than most of my University teachers prepare their classes. Cngratulations for that!
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?
If there were an owl that ate hawks, that would make for the greatest RUclips video of all time.
Very helpful especially for my exams and I thank that
I'm studying at university and this has helped me MASSIVELY to remember certain things, thank you!
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!
helping me get A's in my class all semester, teach it way better then my teacher thanks.
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
Thank you for this amazing lecture.
I am binge watching this series 2 hours before my exam, dammit.
My science teacher shows these to us and it's wonderful.
I hope these guys won't stop. Because if they don't, I'm going to follow them for years.
Great job! A very informative and enjoyable summary. Thank you.
Thank you for helping me with my science test!!!!!!!
its things like this that made me major in wildlife biology the vast complexity of how ecosystems interact with other ecosystems
this review helped me a lot, thanks man, you a lot of D class lives
All i wanna do is study animals 😭 why are there so many types
awwwww
xDDDD
Or I wanna study animals and there are so many types to choose from
0:21
I could name all those!
You would have to specify one that I do understand, but I could!
Cheers! This gave me a far better way of explaining how toxicity increase as you go up the chain.
Thanks a ton for posting this! It helped so much on my homework!
the funny thing is your 20+ now and im a teen this is you 5 whole years ago
@@rougevexy8848 I'm 17 now, and I don't really understand why I was learning this when I was 12
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?
I played "Hanks Face" while watching this. It works surprisingly well.
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
Here 6 years later and your videos are still amazing. BTW I love you in westworld.
Thank you for the video please continue making more and also exciting... i really do appreciate it.
I would love to see an episode about more unusual ecosystems, like the ones that don't get their energy from the sun.
There is always a producer, but it doesn't have to be a plant (or other photosynthetic organism.) In the case of the deep sea vents, it's chemosynthetic bacteria. In all cases, it's something that takes inorganic materials and/or energy from the environment and makes something edible.
Not sure if you got a response:
-Ecology looks more into the interactions between organisms and other organisms and environmental factors, and ultimately how they influence each other.
-Environmental science is the term used to describe how all biological and physical sciences work together as a system. The scope is huge: some of the basic things that tend to be included are biology, geology, oceanography, meteorology, ecology, even economics.
The real difference between two is the scope.
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Bioaccumulation. Everything has a name but TIL. Thanks Crash Course!
I read in quite a few places that the mercury in the water is changed from a non toxic compound to a toxic compound.
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.
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.
I really, super thoroughly enjoyed this. Thank you.
Interesting point! Assuming that by earthlings you mean the most widespread of the planet's primate species (or any other earth species that live in colonies), the toxin accumulation hypothesis is an appealing one, however, let me offer an alternative hypothesis:
They all (most at least) seem to have managed to enter a pact in wich they agree to not eat each other in exchange for not being eaten.
For non-social animals, the cost of combat might be the prevalent factor.
I welcome your criticism.
Thank you for making this video! (: It really helped me out with Biology! (:
Hello:)
Amazing stuff
When I set the speed to .5 .. kind of sounds like you're doing a Cosby impression lol
sounds like he is drunk
And if you play it at .75 speed, he sounds NORMAL
ecosistem ecology test tomorow! hank you are awesome!
I really love when john talks to his younger self. Not many people are so willing to admit their youthful ignorance.
I loved the pop music and magic eye poster references!
I finally understood, you are talented. Thank you for your help!!!
thank you, hank green for saving my science marks
Hello welcome to your revision guide
Anybody else find this more useful than their lecture?
Hank, you sir are amazing :)
Thanks bro
Not all organisms that are autotrophs photosynthesise. There are some which perform chemosynthesis, usually small bacteria that gain energy by breaking molecular bonds and collecting the energy released.
Wow, I didn't know that berries eat bears! Or that salmon eat bears!
It's been commented before but the food web's backwards, the arrow's supposed to point to the thing that's doing the eating, not the thing getting eaten.
Correct, I noticed that as well!
Yep noticed that too.
Watch out for poop it will eat us all
I know you were being sarcastic but why did it sound mean to me
these vids on ecology should be 20 min long, so fascinating
A small note: Most professional ecologists draw food chain / web arrows in the direction of energy transfer, not who is eating whom. So the arrow should go from the fish to the bear because that's the direction of the energy flow.
So happy I understand the NO EDGE reference ^.^
try watching it with 2 speed. it sounds like he's on a sugar buzz.
so.. what's pop music exactly?
I dont know um..........the........um......music that plays on the pop stations and goes pop?
#confusing lol
The stuff that pops baloons
When someone records popcorn popping and makes a dubstep remix
Why biomass of producers is lower than that of the consumers in a pond ecosystem? Will u plz explain it in a bit detail..
What is it called when an animal is even higher than quaternary. Grass -> Grasshopper -> Mouse -> snake -> hawk -> owl.
The Magic Eye thing is hard!! I think I have it though:
There's a horizontal/vertical cross which is medium distance. Then at the top left there's a 'mountain'. At the top right there's a 'valley'. Bottom left is another valley. And at the bottom right there's a circle that's so close it scares you the first time you see it :-P
If there is a primary producer, does that mean there is a secondary producer and if so what is it and where does it fit in the tropic structure?
Pop music is generally describing a line between so called 'art' or classical music, functional music (liturgical and educational), and the music that is consumed by the large masses. Much of the old music that we now consider classical was once pop much including most operas. Much like ecosystems the lines are often blurry and ill-defined.
8:50 The increase in a toxin moving up a food chain should be Biomagnification, not Bioaccumulation.
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
I've never been able to see Magic Eye images - maybe I need to get some Jamiroquai albums.
the image is two cylinders and one square and a doughnut.
@@LenaPStacey So it's not a sailboat, then?
(Mallrats joke)
also all you have to do is unfocuse your eyes at a certain distance and then focuse them again
@@LenaPStacey I know how it's supposed to work, but I've only ever met two people who can make it work.
NO EDGE*
* applies to space and ecosystems, according to Hank Green
Sometime pop is a genre within all popular music and is short for bubblegum pop. This genre is mostly defined by what it's not. It isn't rock, country, hip hop, jazz, but it's still clearly popular music.
NO EDGE. I love when they make references to other vlogbrother videos. =)
6:43 the bear eats the berry not the berry eats the bear. the arrows point to where the it is eaten from
So the salmon eats the squirrel?
yes
i mean no srry typo
Very fascinating episode. Liked, faved and shared.
Wow I just wasted a whole term reading about this when I could’ve just watched a 10minute video
Thank you this helped so much🤗
I should modify that statement with an introduction -- "I love this series! And..."
(2) --> If it's a separate mechanism, it's strange. The problem with being killed and eaten is, obviously, the "being killed" part - once you are dead, it's secondary if you're eaten or buried. So I wonder why earthling evolution developped a "don't eat each other" mechanism instead of a "don't kill each other" mechanism. But the mechanism may have developped much earlier in the evolution of animals in order to prevent predator from self-extinction - a "don't hunt each other" mechanism. --> (3)
Your best one to date for sure!
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
I've got a major crush on this dude.
I've never had much fun with math and science in comparison to language and history, either. But Hank Green has this amazing charisma and way of explaining things that makes me want to learn about these subjects.
okay i have to read ch 7 in the environment and you book by norm christensen do I have to read the whole long 11 pages of the whole chapter to know about ecosystem ecology or should I just watch the videos on here to learn more about ecosystem ecology?
+Racquel Clark okay thank you