In aquatic organisms, these are the respiratory organ for the extraction of oxygen from water and for the excretion of carbon dioxide.

b. read the phase at the intersection of any given temperature and pressure.

d. planting trees

the trees take in carbon to make oxygen.

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this

i think it is d. objects resist changes in their state of motion.