What are the limitations of using models to represent biogeochemical cycles? A-These models are simplified to communicate the ideas which results in a loss of accuracy.

B-These models cannot include all the details of the biogeochemical cycle that they represent.

C-These models include content that is unessential but helps to depict the biogeochemical cycle nicely.

D-These models are based on assumptions and do not represent scientific phenomena.

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

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .

your answer would be a, maximum exploitation of resources.