The building blocks of dna are
a
amino acids
b
glucose
c
nucleotides
d
fatty acids

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

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.