I believe the biosphere is fragile, because over time all of the pollution us humans have made; If its from air pulloution, acid rain or even water pollution. the toxic acids over time have made the biosphere and the ozon layer weaker and more thin. which causes the biosphere to become weaker.
Tsunami waves
Hope it's help you
Answer:
mass
Explanation:
because the unit kg is S.I unit of mass
D. photosynthetic decomposers
Spontaneous mutations in the bacterias DNA