Differences in the density of water can<span> also cause </span>currents<span> to form and move. Density is </span>affected<span> by temperature and </span>salinity. Cold water or water with dissolvedsalts<span> (higher </span>salinity<span>) is denser than warm water or water without dissolved </span><span>salts.</span>
1)First, prepares all the necessary equipment and material
<span>2Creating the pattern that desired for the shell</span>
<span>3)Creates the core of the shell by pouring the hollow spaces with meta</span>
<span>4)Creates molds for the shell by filling the corebox with sands and let them combined over time</span>
<span>5)Shake out the sand after the combination already cooled down</span>
<span>6) cast results are finished.</span>
Answer:
They cross over. Hope this helped
