Communities and Ecosystems (IB Biology) 

I really enjoy studying with your videos, and the puns and jokes just make it easier to learn. Thank you!

2019 graduates where you at?? Let's get iiit. Huge respect for this man, would be nowhere without his videos.

That moment when you have IB Exams in a matter of hours and this guy is cracking jokes throughout the whole video -.-

I love his sense of humour!! Made the content easier to memorize and learn compared to my teacher's. :) Thank you!

It is really helpful for me to self study this topic as my teacher leaves this topic as a holiday homework.. super helpful! Thanks alot!

Please make a video for Option C - Ecology (Paper 3). I have my exams in a month and need help on that unit!

love your videos!!!! I have a hard time studying for my IB exams but you make it really fun!! Thanks

Thank you so much for your videos!!!! These are actually my life savers!!!!!!! Lots of respecttttttttttttt

Alex Lee I declare my love for you.

I love your accent and style Mr Lee! Also your videos are among the most helpful I have found on the Internet while preparing for my IB Biology exams!

This should be a good video to show my fifth graders. :) Thanks.

How magnetic voice, if the same in Your childhood, really don't remember..

love the puns and jokes

Thank you for the videos and pls be safe in japan!!!

You are amazing!

Thank you this is such a great video it helped me so so much thanks you so much👌👌

hi mr lee is there any chance you might make videos about the new hl bio syllabus that starts 2025?

thank you for saving my life

with that mouse highlighting skill you should play osu lol

Thank you soo much for the video! Helped me a lot :)

I HAVE AIIIDSSS WOOOHOOO

AW YOU PLAY UKULELE THAT'S SO CUTE ♥

If you have the time, could you make new videos for this topic? :)

I understood a lot with this! But i have a question, are saprotrophs also autotrophs or heterotrophs? Thank you! i

This is really helpful!

老師太可愛了..!! 感謝TT

Sal khan? Is that you?

I think I lost my appetite watching this, but thank you very much! xD

Thanku! However, when you play the music, I only focus on it not the question.hh