Well Sertoli cells<span> keep the germ </span>cells<span> that start the process healthy and nourished. </span>
Answer:
Deep ocean currents Differences in water density, resulting from the variability of water temperature (thermo) and salinity (haline), also cause ocean currents. This process is known as thermohaline circulation.
Explanation:
Electric Current. Here are some more words to meet the requirements.
Natural selection leads to evolution because the strongest survive and pass on their genes
