1. Atmosphere
2.terrestial biosphere
3. Ocean
It is classified according to their economic importance:
1. Cereal crops
2. Forage crops
3. Fiber crops
4. Sugar crops
5. Oilseed crops
6. Pulses or grain legumes
7. Root and tuber crop
8. Narcotic or drug crop
9. Veggie and garden crop
10. Condiment crop
Answer:
yes because man kind will reach to the center because it is developing day by day
im not to sure, but i think its 21.95
hope this helps! :)