Which of the following is an example of how biogeochemical cycles, including the carbon cycle, are important to sustaining life?

a
New carbon atoms are created during the carbon cycle.
b
Dead organisms and waste is recycled into usable nutrients for others or into sinks.
c
The atoms in water molecules are always destroyed during a drought.
d
Oxygen atoms are converted into carbon atoms during cellular respiration.

b

Dead organisms and waste is recycled into usable nutrients for others or into sinks.