Approximately 5 of the Earth's oceans have been explored by humans, while a larger portion of the land has been explored.
Um... yes. Humans pretty much have explored all the Earth's oceans. I get the feeling you were trying to ask a question to which the answer is less obvious.
Within Carlsbad Caverns itself, about thirty miles of tunnels have been explored. Within the park is Lechuguilla Cave, which is much longer at 138 explored miles.
I do not know too.
Being the longest cave explored (350 miles)
Approximately 15%.
I live on Earth, as do all other humans. Where are you from?
They are not needed at all, the earth would be much better place without them...
as much as humans on the earth
Atoms existed long before humans. Atoms are the basic building blocks of matter and have been present in the universe for billions of years. Humans, on the other hand, evolved much later in Earth's history.
None has been found yet, but it may still be found in the future - not much of space has been explored yet.
Animals reproduce much faster than humans and have more children at one time.
Humans live on approximately 30% of the Earth's land surface. The remaining 70% is covered by oceans, deserts, mountains, and other uninhabitable areas.