Ais a rhythmic movement that carries energy through space or matter.
a. crest
b. tide
c. wave
d. trough

because the light is a great source of energy for the plants to survive. (i hope this )

phaneritic textures in which phaner means visible so phaneritic textures are standard of impertinent volcanic rocks. these rocks crystallized gradually under the surface of earth. when the magma cools deliberately then the ores have chance to develop and produce long crystals.