Particles from the top of the cloud get heavier and go to the bottom of the cloud also when positive and negative charges grow large enough
Corrosion is when weather weakens and brakes apart rocks. An example would be the rocks at the beach that eventually begin to form holes and loose its mass due to the constant corrosion from the sand, water, and wind.
It would be x and y chromosomes
<span>Homologous chromosomes have to attach together to the same spindle fiber during prophase 1. Then, some of them may go through crossing over, which switches fragments of them. Then, each pair of homologous will migrate to equatorial plane during metaphase 1. So, in the metaphase plate you will have pairs of homologous, both of them duplicated, but the 4 chromatides may be different due to crossing over (it depends on where the enzymes have cut and pasted in that process).</span>
