Explanation:
the carbon cycle is the biogechemical cycle by which carbon is exchanged between the biosphere, pedosphere, hydrosphere and the Earth's atmosphere
The correct answer is C- androecium.
Heat convection is a mode of heat transfer by the mass motion of a fluid such as air. Heat convection occurs to the surface of an object where the surrounding fluid of object is heated and moved energy away from the source of heat.
1, O because if either shows present it's O.