Hi there!
The example of the meadowlarks is an example of behavioral isolation. This is because the mating call is a behavior the birds exhibit. This helps the birds to find their correct mate because though the birds look similar, they are not able to produce offspring.
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The answer is (A. A warm current flows along the coast.) Currents carry cold and warm water from place to place. It's an amazing phenomenon that scientists are still trying to fully figure out.  Some think it's caused by wind, others think it's caused by the shifting of the tectonic plates, but one thing's for sure, currents are VITAL for this planets life.
 
        
                    
             
        
        
        
Hydroelectric Power 
The benefits are: <span><span>
1.       </span>Hydroelectric power is mainly a renewable source of energy. It relies on the stream cycle of water which do not cause pollution.</span>
<span><span>2.       </span>Hydroelectric power also helps and promote water reservoir and storage.</span>
The cost are: 
<span><span>1.       </span>0.85 cents per kWh is the average cost in the US.</span><span><span>
2.       </span>Conventional installation costs $1,000-$5,000</span>   
Geothermal Power 
The benefits are: <span><span>
1.       </span>There is no pollution</span><span><span>
2.       </span>We lessen the utilization of fossil fuels</span>
The costs are: <span><span>
1.       </span>$0.03<span> to $0.035 per kWh is the cost of electricity by The Geysers.</span></span>
<span><span>2.       </span> <span>$20,000 to $25,000 costs to build this power plant
Hope this helps.</span></span>
        
             
        
        
        
The two components of a 5-methyluridine are thymine and ribose pentose sugar. Here thymine will joined with the ribose pentose sugar . Thymine is the nucleic acid . There are two types of nucleic bases . Purine and pyramidine . Hence purine comes under pyramidine. Thymine is represnted by T symbole.
 
        
             
        
        
        
The purpose of a bacterium's capsule is protection.
<h3>What use does the capsule of a bacteria serve?</h3>
White blood cells may eat and kill pathogens, but capsules could stop that from happening (phagocytosis). Although the precise mechanism for avoiding phagocytosis is unknown, it may occur because the presence of capsules makes the surface elements of bacteria more slippery, preventing the bacterium from being absorbed by phagocytic cells.
Capsules comprised of bacterial defenses and the host. The main function of the capsules of pathogenic bacteria is to prevent opsonophagocytosis or in the case of Gram-negative bacteria, complement-mediated lysis by shielding the bacterial surface from interactions with the host immune system.
To learn more about bacterium's capsule visit:
brainly.com/question/12789454
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