Frequency of the light wave
Answer:
c
Cause at the bottom it is cold and up top is warmer
The biosphere is the worldwide sum of all ecosystems. Biodiversity is the variation of genetic species in the ecosystem.
hope this helped :)
Because their jobs required them to set all day.
Answer:
it's necessary because your body uses water in all its cells organs and tissue. water helps you to keep moving and functioning.
