Answer:
I'm pretty sure the answers for this is D, C, and B.
<span>All the options (heat, pressure, deposition and chemical environment) are correct.<span>
Metamorphic rocks are formed when pre-existing rocks are subjected to heat, pressure and hot mineral rich fluids which cause physical, chemical and mineralogical changes to the rock. Metamorphic rocks are grouped by chemical, texture and mineralogy. The common metamorphic rocks include schist, marble, and gneiss.
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Photosynthesis. These are the reactants for photosynthesis and the products of cellular respiration.
That is TRUE, which makes updating maps extremely easy and convenient, not to mention it's the key element in GPS systems.
