Internal fertilization is the process when the syngamy (union of male and female gamete) occurs inside the female body after insemination using copulation. In contrast, External fertilization is the syngamy outside the female body, that is in the outer environment especially in water bodies.
        
             
        
        
        
The work of a lifeguard<span> is is to rescue and to ensure the safety of swimmers, surfers, and other water sports participants such as in a swimming pool, water park, or beach. To be a certified lifeguard, you must understand the following:
1. D</span><span>eveloping evacuation plans </span><span>
2. </span><span>Florida-friendly beaches 
3. S</span><span>aving people caught in rip currents
4. Identifying signs of oncoming tsunamis</span>
        
                    
             
        
        
        
List the four types of organic macromolecules. Provide specific molecular examples of each.