Describe the rool each element plays in the life of a plant.
a)soil
b)water
c)light

Is this a single replacement reaction or there is no

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device