1. Homo Sapiens
2. Titin ( I will not type it out because it is too long.)
3. Gromphadorhina portentosa
4. No. That is a misconception. Since coal is formed from terrestrial plant debris and the oldest land plants are younger than almost every diamond that has ever been dated, it is easy to conclude that coal did not play a significant role in the formation of Earth's diamonds.
5. No. That also a myth. Although the great wall of china is long, but it is too narrow and similar color of it's surrounding, so it's almost impossible to see it on space.
6. Solar wind.