Carbon Dioxide or CO2 is the waste product of the Krebs Cycle
<span>Phosphorous cycle. </span> It differs from the other major biogeochemical cycles in that it does not include a gas phase
C. recycling
the rest are destroying the earth
Ferns make their own food. They grow and reproduce using spores instead of things like seeds. Humans on the other hand have to ingest food from their surrounding and when mature reproduce sexually. They can also choose if they want to reproduce or not while ferns don't have that option. Sexual reproduction is based on inseminating and egg cell, while ferns don't worry about this because the spores just fall on the ground.
