Nervous System
<span>Respiratory System
</span><span>Circulatory System
</span><span>Digestive System
</span><span>Urogenital System
</span><span>Endocrine System
</span><span>Immune System</span>
The nucleus directs all activities that happen within the cell and contains the cell genetic material (DNA).<span> The nucleus gives the signal to the cell to grow, divide and/or make proteins. </span>
Answer:
C. They lose their gills
Explanation:
They lose their gills but grow lungs