PLEASE I BEG YOU SO MUCH 15 POINTS HELP ME 4. Armando thinks that it is the very steep hill that makes this river narrow and deep, but his classmate thinks it is the small size of the sand grains that the water flows through.

What information can the model provide us that would be used as evidence that Armando's idea is correct?

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?

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