Its stabilising. Since the selection pressure is against the extremes which are the normal blood and the sickle cell anaemia. 
 
        
             
        
        
        
Charles Darwin noticed that among the same species there were variations in traits based upon geographical location. These changes may have evolved from climate differences, predator/prey relationships and food sources. This particular experiment was intended to duplicate natural selection by demonstrating the concepts with artificial selection. The result was that over time, new traits could be bred for. Although there may be more than one correct answer here, the best answer is the first; desirable traits can be selected and bred in offspring.
        
             
        
        
        
<span>uniformitarianism, You should probably create notes or look up more informative sources.</span>
        
             
        
        
        
The answer would be:
A. Absorbs; Increases
This is why:
When a substance is heated, the molecules that makes that substance gain kinetic energy. This is because heat is energy and the substance ABSORBS it. When this happens, this causes the molecules to move faster which results in an INCREASE in kinetic energy. This would result to an increase in temperature of the substance. 
 
        
             
        
        
        
Answer:
Explanation:
Science is the study of the nature and behaviour of natural things and the knowledge that we obtain about them. A science is a particular branch of science such as physics, chemistry, or biology. Physics is the best example of a science which has developed strong, abstract theories.
Five key descriptors for the scientific method are: empirical, replicable, provisional, objective and systematic.