300km is closest to maximum tickness of a plate.
Go to google.................
The first species that colonizes new of undistributed land is called as pioneer species, or simply pioneers. If you check the meaning of pioneer, it's a type of person or entity that became the first to explore or exploit a certain something. In this case, they were the first species who explores the lands to create a society.
Answer:
c. Hydrogen
Explanation:
Do I really need to explain...
