To remove all fall risks in the area,(rugs, electrical cords, O2 tubing..etc)
Carbon is found in the non-living part of the hydrosphere, atmosphere, and Geo-sphere, as carbonate (CaCO3) rocks and dead organic matter, such as humus in soil.
B. Consumers produce Co2 for which plants need to allow photosynthesis to turn back into oxygen.
B because when ice melts it doesn't stay in the same form
