I would say oxygen because respiration is breathing mechanically.
It is more of a web because it can start in any order and move into any rock type. example being you can start as a sedimentary rock and turn into a metamorphic rock or igneous rock. a cycle starts anywhere and then goes into a specific cycle.
hope this helps
Conservation is the protection of an organism or a group of organisms (like an endangered species or forests).
Biodiversity is the numerous amounts of species habitated in our earth. The more biodiversity, the better.
Conservation protects biodiveristy, thus, allowing more species to survive and thrive.
<span>Eats plants only: Herbivore
Eats animals only: Cornivore
Eats plants and animals: Omnivore </span>