It means an organism respire without it
so that organism know as anaerobic
for example : bacteria eats human and animal dead bodies under the earth there O² is deficient so bacteria respire with oxygen O²
1 hour I think.. correct me if im wrong <3
Answer:area of grass and trees and other vegetation
Explanation:set apart for recreational use or aesthetic purposes in urban environments
Quartz have the less solubility during weathering. <span>Quartz is the rock forming mineral least susceptible to chemical attack at Earths surface.So rocks rich in quartz tend to have poor solubility during weathering.</span>
