Dear school leaders,
For MTLT#8, we asked you this question:
Where does most of the mass of a tree come from?
(A) Air 
(B) Soil 
Correct answer: (A) Air
Explanation:
The intuitive answer- and common misconception- is that most of the mass of a tree or plant is acquired through nutrients absorbed from soil.
Plants can weigh several kilograms and many tress weigh hundreds or even thousands of kilograms. If most of this was due to soil, we would see a huge hole or depression in the soil (on ground or in the pot) as tress and plant grows up.
A plant is mostly made up of carbon based compounds, such as Cellulose. This is created using the fundamental molecule that plants make during photosynthesis: Glucose. Glucose is mainly carbon and oxygen, both of which are provided by carbon-di-oxide(CO2)!
Parts of the plants like leaves, trunks, roots and branches are primarily made up of compounds of Carbon- which comes from the CO2 in air!
How School Leaders responded?
Lucky Draw Winners:
1. Amol Vaidya, Global Indian international school Dubai 
2. Simran Bhatia, Nosegay Public School, Sriganganagar
3. Geetha Laxman, National Model Sr Sec School, Coimbatore
School Leaders who submitted the correct answer:
1. Priyanka Bora, Sanskriti The Gurukul, Guwahati
2. Reeta Bhargava Maheshwari public school Pratap Nagar, Jaipur
3. Dr. Pampa Chaudhuri, PICT Model School Pune
4. Minita Sharma Sanskriti The Gurukul
5. Parul Agarwal Sanskriti The Gurukul , Guwahati
6. Priya Sangwan Srbps
7. Anu bhatia St.edmunds school
8. Dr. Amlan K Saha The Sagar School, Alwar
9. Prashant Sharma Ambuja Vidya Niketan Ambujanagar
10. Mamta Jain Jaipuria vidyalaya
11. Aditi Basu Roy Grads International School, Greater Noida
12. Roshan Patel Ryewood International School Lonavala
13. Damayanti Bhattacharya Jadudben ML school
14. Dr. Rupali Dhamdhere Trinity International School
15. Kanchan Joshi Cygnus World School Vadodara
16. Rita Taneja Delhi public school
17. Manan Choksi Udgam School, Ahmedabad
18. Yogita Bhagania Mayoor Private School, Abu Dhabi
19. Dr. Amita Saxena, Rotary Public School Gurugram
20. Sheela Menon, Ambassador School, Dubai
21. Nita Arora, Sri Venkateshwar International School, Sector-18, Dwarka, New Delhi
22. N.S.RAO, Bhavya Talent School
23. Poonam Rawal Wisdom World School, Kurukshetra
Would you like to know how Open Door can help your children think with similar beautiful questions?
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