I have been studying C3, C4 and photosynthesis for an exam tomorrow for the last three hours. Reading notes, drawing pictures, talking out loud to myself like a nut. At the end of my tether just not grasping the simple pattern or key or whatever it is about C3 and C4, I was about to give up then thought I'd try a visual approach to learning (which I prefer anyway). This video came up and in JUST 6 minutes........I have finally grasped the concepts...OMG...I am so happy and grateful for this amazing video and will be viewing the previous ones. Thank you so much!!!

The best explanation of C4 and CAM plants I have found so far. You are the man to look for on You Tube when it comes to botany, thank you very much!

the best explanation of C4 path. Thank you so much. You saved me. This path was always so difficult for me to understand but you made it so easy to understand. Thanks a lot.

that was a great lesson, very clear and understandable. I needed that! Much better than textbook explanation!

Thank you!!! You are the best teacher on the whole Internet! There is nobody who can explain something better than you.. Im soo thankful

honestly an amazing explanation

You are an outstanding Teacher. Very clear to understand Photosynthesis in C3, C4 and CAM Plants. Thank You!

A huge thanks from Germany :D U taught us more than our teachers did in the last 3 years XD

Learned more in watching these 5 videos than 2 weeks of explanations from my crappy cegep teacher. Thank you!

Good detailed examples on photosynthesis and who ever disliked this video obvoiusly does not like how ur teaching us under grads how easy it is, really to understand this process, thanks again!

Wish our professor was half as good as you, i only find the best teachers at youtube. Keep up the good work mate, thanks a lot

One of the best videos about the subjectcon KZfaq! Awesome.

You mentors are gifts to this world! Thank you so much!

And i don't understand, how a teacher can't explain it so clearly in 45 minutes of lessons while you can in 11 minutes -.- Great job! Really helpful :D

this explained C4 plants so much better than my teacher does. BLESS YOU

Plant evolution is absolutely incredible. And you're an incredible teacher

Your voice is a chocolate river.

I just watched this entire series for the AP exam and it is amazing. I can't believe all of this goes on in a tiny little leaf.

Thank you. The video is very well laid out - with clear explanations and diagrams. I've been trying to understand this topic for 12 wks with my Uni reading. This video was able to break it into understandable chunks which has made me feel much more confident with this topic. Thanks again for taking the time to put this video together.

This is THE best video on this subjekt ever!!! Thank you

Best Video on C3, C4, and CAM on youtube I found till date !!!!

You just saved my life. Essay due today and I'm not even worried anymore. Why didn't my bio teacher just explain it like this?! Thank you so much.

thanks for your help i am gaining better understanding on this because of you, thanks for your help. please keep uploading videos , me as a student find your videos much better than my college professor. much respect thanks alot

Uploaded on 2012, I watched it now on 2016, Really helpful and straight forward forever.

Thank you so much!! You've helped me a lot. No teacher in Germany could explain it better than you :)) keep it up, cheers! ^^

i can't tell you how much this video has cleared up photosynthesis for me! i had to learn this section by myself because i missed the lesson in class and i could never remember it. now that APs are coming up, i had to relearn it. this video really helped! thank you!!!

I went over so many videos of C4 cycle but this is the best

9 years later... this video is still a gem

Another thank u from Germany. Simple and understandable

You are my hero. Thank you so much for helping me understand photosynthesis.

Great videos. You do a great job, just wow. I watch these as a supplement to my college lectures and readings. Being a visual learner, this really helps my comprehension. Greetings from UC Davis!

Thanks so much these videos helped a lot! I barely understood what was happening, this cleared it all up and helped me prepare for my test!

Very concise and useful explanation! Thanks a lot man. You must be a good teacher!

Your videos are lifesavers!! Makes so much sense :)

Thanks a lot Craig! This video helps visualize all the processes in a better way.

Thank you sir i became your fan. i could not understood photosynthesis for last 2 months, every time i tried it i felt boring. but This vedio helped me a lot. many many thanks to you.

Great video on photosynthesis. Its concise yet specific.

This helped put all of the bits and pieces together! It now makes sense as to how & why photorespiration is activated! Thanks for the amazing video :-)

I love your teachings. And your voice too! Some good teachers don't have good voices but you have both! And nice PowerPoints!

I honestly want to thank you for putting your time into the making of these videos. My teacher took about 3-4 1 hours lectures trying to explain these 5 series and confused me so much. I feel like i can teach this now, and I only watched once. You are so clear, and fast at explaining these. Thank You again I truly appreciate this. :)

thank you so much for making this so simple and easy to grasp. you're bang on dude !

I have learned more through your videos. Thanks for your effort

Craig you're a savage, that was awesome!

Love ya...for saving my life. You actually made plants more interesting. Thanks :)

thanks man! i really needed that. i am german but there is no german video of that so i tried a lot of english videos. yours is the first i learned something with !

That was absolutely fantastic, thank you so much for making this!

Very clear explanation. Thank you! This is of great help in understanding the basic concept behind.

Dude, I love how you simplified this topic!

WOW!I cant believe this ONLY has 58,600 views!! the teacher asked us to study this in an undetailed text from the book that was too brief to make sense. I'm glad this video was there otherwise it would be Great Depression two for me :)

I loved it. straight forward and very informative. thank you for your video!! 🙌🙌

Explanations were really clear! Great video!

Thank you!!! Such a good way to study for a hard exam! Please keep making more Science videos; they're great :)

awosome video!! it has become really easy for me to understand the C4 pathway

Your videos are great! Now im prepared for my test tomorrow... Thank you very much!

I have a bio test tmrrw and we're being tested on this topic.. I had trouble understanding it but now it all makes so much sense !!! woot thanks : )

dude you saved my life!!! it all makes sense now!! thanks so much

THANK YOU SO MUCH! This was very detailed, but you explained it in simple terms so it was able to understand. I know feel confident for my test

thank you for this presention .. happy to understand what actually happens

Wow ..!! Wat a video ..!! Superb man ..!! All d videos & explanations were clear & perfect ..!!

Your diagrams were extremely helpful!!!!! Thank you!!!

OMGOSH! THANKS SOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO MUCH!! FOR MAKING THIS VIDEO! I HAVE AN EXAM TOMORROWAND I FINALLY GET IT! Im just going to review it!! Thanks soooo much!! i cannot emphasize it enough!!! :D

this is a PERFECT video! you explained it so well, thank you so much! I completely understand now :)

You just saved my life!! Awesome vids!!

thank u brother...i was streaming through the books but could not understand anything..but your video made my leson easier..thank u again

Just watched the full series. Thank you, very straightforward and informative. This will help a lot :-).

Thank you so much for this video. I have a test tomorrow and this cleared my doubts. Thanks!

Jeez, you're like the crisis guy, helped me out of the confusion with ease :))

WOW What a great way to explain. Thanks !!!!!!!!!!!!!!!!!!

been watching it again - its like every year we have to write about this stuff and i just keep forgetting it :DD so....after 6 months, this video is still helping me study, gr8 job!

Thanks that cleared things up alot. I'm more of a visual learner so this video really helped!

AMAZING, great info, great explanation!!

Great explanation and splendid visuals!

awesome bro......you nailed i....igot it over tonnes of pages but even a little idea didnt glimpse ......but this video improvised my concepts thanx again....

Wow, thank you so much! You made this so much easier!

Wow thank you I really enjoyed watching this!!

I love these videos, it's like discovering a new frontier. One day the names might be as familiar as Indians and buffalos, etc not meaning ETC. And people having raised ATP levels. I don't have any exams so I can only admire the effort it must take to learn something so complicated for that purpose.

Goodness I actually understood like I friggin grasped it . Thank you so much man

thank you for making this understandable! I enjoyed the videos, thanks for uploading these :)

U r awesome mann..nothing bettr den wat u jst explaind in dis vid ..respect !

This is a fantastic video, thank you!

Very clearly described and get the points. Thanks heaps.

This was so helpful I totally understand this now.

Thank you a bunch! I am a visual learner and this makes perfect sense. HONESTLY, THANK YOU!!!!!

Excellent video !

Amazing Job, Incredible!

a very useful video after watching your video, i totally get the idea of C4 plant and C3

Wow! Great series.

thank you so much for this video! i have a test tomorrow and this really helped me to understand the part of photosynthesis better!

Great video! Thanks for the job bro!

you just blessed me for my exam!!! THANK YOUU

Great work!! Very well explained

Great vid!, thank you very much! I've got 1 question if you dont mind: in C4 plants, what prevents O2 molecules from diffusing into the Bundle Sheath cells as well and to disturb the RuBP there??

really awesome with clear cut demonstration. thanks a lot

Sugar cane is a C4 plant. Great observation. I have the C4 pathway under the CAM plant (pineapple) and the CAM pathway under the C4 plant (sugar cane). I'll add a note to make it clear. Thanks for the heads up.

Awesome work! Much appreciated!

This stuff is amazing, thanks again

This helps me alot... Thanks from Brazil!

Awesome, very clear explanation.

Excellent explanation. Thank you!

Thanks.. this video is helping me study for my exam :) you rock!