1pt How does metamorphism change the mineral composition of preexisting rocks? O A. Pressure can alter the crystal structure of a mineral, creating a new mineral. B. Heat can drive off chemical elements from the minerals. O C. Fluids can cause chemical reactions within the minerals. OD. all of the above

Why are fossils of organism's from the phanerozoic eon much more likely to be found than fossils of organisms from any other eon? a. more organisms present during the phanerozoic eon had soft body parts. b. organisms present during the phanerozoic eon were all microscopic. c. more organisms present during the phanerozoic eon had hard body parts. d. organisms present during the phanerozoic eon are the most ancient life forms.

The coco river is a natural border between nicaragua and which other country

17. the soil erosion pictured here is the result of what? a. harvesting renewable resources at a rate greater than the sustainable yield b. a mudslide caused by excessive rains c. harvesting renewable resources at a rate lower than the sustainable yield d. the transition between geologic eras and eons