The results of Meiosis I are two diploid cells with genetic differences on the chromosome. These differences are a result of crossing-over. Crossing-over is a process that happens after both homologous chromosomes in a pair join up to form a structure called a tetrad. Tetrads form through a process called synapsis.
A tide is the periodic rising and falling of Earth's ocean surface caused mainly by the gravitational pull of the Moon acting on the oceans. Tides cause changes in the depth of marine and estuarine (river mouth) waters. Tides also make oscillating currents known as tidal streams (~'rip tides'). This means that being able to predict the tide is important for coastal navigation.
Tides are caused by the gravitational pull of the moon and sun. The tide itself is actually a huge wave with an extremely long wavelength. The wavelength is so long that it is only easily observed in the ocean because of it's size. Tides do occur in lakes and ponds they just aren't noticible. Seas and Oceans have space which air can flow freely without stopped by any objects where as in lake or pond ,the water is less and not that much air flow freely. So the air makes large waves in seas and oceans than the lakes and ponds.