Answer:Were all worthless in this world!!!!!
Explanation:This should be obvious, we only live and then die.
Answer:
If we did not have an atmosphere, we would fly out into space. We would also not be protected from harmful rays from the sun, and astroids. Human life would not live very long.
Explanation:
Hope this helps! :)
Absence of true roots stems and leaves
I believe studying the hydrosphere would be most important because we haven't explored a good majority of it yet so we need to explore our waters before we explore space