Which of the following represents ways nitrogen can enter the soil? I. Photosynthesis
II. Sunlight
III. Rainfall

III only
I and II
I and III
I, II, and III

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

answer; motor (efferent)neurons;

the correct answer is: " ventricles " .

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