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.
high tides are high water level they are called spring tides and low tides are low water level they are called neap tides. high tides and low tides occur when the sun, earth a â¦ nd the moon are inline. Low tide is when the moon pulls the sea out further creating more  sand â¦ space.     High and low tides are caused by the positions of the Sun and Moon  relative to your position on the Earth's surface.