GCSE Biology Revision "Pyramids of Biomass" (Triple)
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In this video, we look at pyramids of biomass. We explore why biomass always decreases moving from one trophic level to the next. We then learn how to calculate the efficiency of biomass transfer.
This video is based on the AQA spec. If you are following a different exam board then you should check your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
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Cows commons.wikimedia.org/wiki/Fi...
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Msact at English Wikipedia [GFDL (www.gnu.org/copyleft/fdl.html) or CC BY-SA 3.0 (creativecommons.org/licenses/...)], from Wikimedia Commons"
Caterpillar "commons.wikimedia.org/wiki/Fi...
By Greg Dwyer [CC BY-SA 2.5 (creativecommons.org/licenses/...)], from Wikimedia Commons"
Sparrow By Fir0002 - Own work, GFDL 1.2, commons.wikimedia.org/w/index...
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Music credit:
Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence (creativecommons.org/licenses/...)
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Пікірлер: 72
Nobody: Every sinle science teacher: Ima steal ur vids and put it in every class i do
Not all heroes wear capes....
@phase0400
3 жыл бұрын
Sometimes they wear blazers.
@ExtremeMCYT
Жыл бұрын
Wow what a nice compliment from the real Gabriel Jesus
Sir should get some sort of medal for doing this, he’s so helpful to so many people!
Honestly this guy - this video has saved me! although i'm in first year at uni, we are suddenly doing a course in ecology (not my main subject) and it's taken me hours just to figure out what on earth biomass actually is on a simple level so that i can figure out a whole tonne of other things - also in this video. phew!!!! THANKYOU!!!
1:10 "I should put out that no scientists go around killing animals" Yes sir hahahhahahaha
Cheers sir, helps a lot more then reading through a book
Even though this isn't Chemistry, I would just like to say thank you for these videos. I wasn't feeling prepared for the chemistry GCSE exam at all today but I watched your videos and I think I did really well. Your videos are incredibly helpful, and I appreciate them so much. Thank you.
@mahisarpal4328
2 жыл бұрын
howd it go
Can u pls make videos on A'level sciences
my teachers put videos of you on in class
@toby38572
3 жыл бұрын
Lelouch????
Thanks for all your videos!
Thank you so much for making these videos, they are quick and saved my life.
@SodiumNuke
5 жыл бұрын
This is also known as pyramid of numbers, the sizes relate to organisms
I can't thank you enough! I was about to explode reading the texts over and over again
Could we get a mark for saying that some of the biomass is lost due to not all parts of the prey being edible? For example bones.
@Freesciencelessons
5 жыл бұрын
Yes I think that would be accepted.
@covid-21delta99
3 жыл бұрын
It would be accepted, but you’ll lose half or more than half a mark. I’d recommend you to write and explain properly, especially if it’s a final GCSE/IGCSE exam!
this guy is the reason people pass science
Sat here playing out the scenario in which a bunch of goobers arm themselves with the finest caterpillar slaying weaponry on the market, in order to dry them out for their own 'scientific' purposes.
@banishedguardian701
3 жыл бұрын
ye lmao i see that bit and just die inside
Hell yeah, more videos!😊
You are an absolute legend
tysm u help me get 9s in all my gcse
this guy is a g
You are a legend thank you! Anyone else here in Lockdown? I can’t be the only one! *raises hand*
@covid-21delta99
3 жыл бұрын
Yea
Thx so much! It helped!
Absoloute Legend My Son.
0:53 lol love these videos thanks so much
Could you come into my school and give a pep talk pleaseeeee
Hello sir, according to the advance information, we are not required to cover “4.7.4.2 Pyramids of Biomass” but are required to cover “4.7.4.3 Transfer of Biomass”. At which time stamp would you consider the margin which separates the two? Thank you
@zhebq5874
2 жыл бұрын
Just look at the spec and search on google. So much easier
The man the myth the legend. Shaun donnelly!!!!!!!!!!!!!
ok but... HOW. HOW DO YOU DRAW ONE. the axis are weird... help
you should monetize all of your videos, you deserve the money.
This helps me in year 8
Can anybody help to drawing pyramid of biomass?? Thanks in advance
Literally the night before my Science exam
When they ask you in the exam to draw the pyramid, does the length and width matter or do you just write the numbers on?
@Freesciencelessons
3 жыл бұрын
Normally, the area of each step represents the biomass at that trophic level. It is possible that they would give you one to complete. The key thing to remember is that the steps always get smaller towards the top due to energy losses.
@Peardrops
3 жыл бұрын
@@Freesciencelessons thank you so much 🌟😊
what is the actual defination of biomass
@chriskey99
6 жыл бұрын
The dry mass of biological material in grams
I have to study this but im core? is this relavent to me..?
@rebeccacucumber6611
5 жыл бұрын
no
This cane up today
lets go quarantine
Felt like I got around 50 on b1 then like 25 marks on c1 anyone else like that?
hes brill
Don't you also have to know how to draw the pyramids of Biomass? @freesciencelessons
@Freesciencelessons
4 жыл бұрын
Yes you should be able to draw a pyramid of biomass. They all have the same basic shape.
0:50 that is so dark y isn't anyone talking about that?
@jacobholmes9999
5 жыл бұрын
it is life
@itszyad4332
5 жыл бұрын
I was about to choke on my coffee, it was hilarious how deadpan he was
@Rishi-qk2qp
4 жыл бұрын
@@jacobholmes9999 not really, we choose to kill them, we aren't compelled to are we. It's not like nature where a lion HAS to live by hunting and eating deer
why does he wear the same suit though
@Freesciencelessons
4 жыл бұрын
I actually wear three different suits in my videos.
@covid-21delta99
3 жыл бұрын
@@Freesciencelessons fascinating :)
If plants have so much biomass compared to other species how come they don’t weigh that much compared to humans
@Freesciencelessons
5 жыл бұрын
Biomass refers to all the plants in an environment not just one plant. Collectively the mass of plants would exceed the next trophic level.
@covid-21delta99
3 жыл бұрын
@@Freesciencelessons so basically it refers to as population in a specific area depends too
proud to be the first comment
The catapiller genocide...
hello
Scientists are murderers: 0:52
Whos here for paper 2 😭