Describe<span> how </span>eukaryotic cell's chromosomes change as a cell prepares to divide<span>. Before </span>cell<span> division each </span>chromosome<span> is replicated. At the beginning of division each </span>chromosome<span> has two daughter chromatids. ... A scientist treats </span>cells<span> with a chemical that prevents DNA synthesis.</span>
Batteries, biomass, petroleum, natural gas, and coal are examples of stored chemical energy
Photosynthesis, ocean absorption, and fossilization are carbon sinks. Combustion and respiration are carbon sources
