Efore cell reproduction or mitosis can proceed, what is the correct sequence of steps that must first occur?
a) chromosome replication, chromosome checking and repair, growth
b) growth of cytoplasm, duplication of cellular organelles, chromosome replication
c) replication of chromosomes, growth, duplication of cellular contents and organelles
d) growth, chromosome replication, repair of chromosomal errors, duplication of cell organelles,

b. read the phase at the intersection of any given temperature and pressure.

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.