Primary structure, which is simply the sequence of amino acids in a polypeptide molecule.
        
             
        
        
        
EcosystemTropical Savanna is found between sections of tropical rain forest and deserts.  They have 2 seasons; wet (constant humidity) and dry (long periods of dry spells and drought that may cause fires).
Both savanna buffalo and forest buffalo live close to water. The buffalo are found throughout the northern and southern savanna as well
as the lowland rain forest.
<span>How might this population suddenly increase? How might this affect the ecosystem?  If there was an increase in population; grasslands during the wet season will be gone, more predators will flock for an abundance of buffalo.
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<span>What might happen to the ecosystem if this population was removed?  If you remove the buffalo from the savanna ecosystem, it can cause a ripple effect such as populations of small mammal (mouse) will double, which will attract more snakes (venomous), it can cause the flea and tick population to increase, and the increase in tick/fleas can cause the risk of transmission of flea/tick borne pathogens.</span>
 
        
             
        
        
        
A or c. I thought technically it was selective breeding but i haven't done genetics in a while to know what it's actually called
        
             
        
        
        
Explanation:
When there are low oxygen levels in blood, the blood pH tends to lower. This is because there is an increased level of carbon dioxide in the blood that is converted to carbonic acid by carbonic anhydrase. When carbon acid dissociates, into H⁺ and HCO₃⁻ . The H⁺ influences the increase in acidity of the blood.   The kidneys will excrete most of the H⁺ and retain most of the HCO₃⁻ to help maintain the right blood pH. However, most of blood pH homeostasis is maintained largely by the lungs. 
Learn More:
For more on function of kidneys check out;
brainly.com/question/1285333
brainly.com/question/909694
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It would lower the pH, raise the acidity of the water, and it would kill off a lot of marine life if it got too high. As species begin to die their predators follow, and this could cause mass extinction.