Answer:
D. Artificial Selection. 
Explanation:
Normal people can't breed cats by modifying their DNA, so options b and c are eliminated. Breeding cats for specific traits is not natural, so it is not choice a, either. Instead, selective breeding is d. artificial selection. 
Hope this helps! 
 
        
             
        
        
        
This type of water transition or change in phase of matter is known as FREEZING. 
Water has molecules that are free flowing and have the ability to collide and bounce against each other, that's why it has that kind of characteristic that it takes the shape of its container. 
When these molecules are exposed to lower or colder temperatures, the molecules tend to vibrate and get attracted towards each other, creating a semi-solid or completely solid material. In this example, liquid turned into frost because of the low temperature present within the environment.
        
                    
             
        
        
        
Maybe because food was here before the population even started to grow?♀️
        
             
        
        
        
Answer:
The answer is sedimentary rock.
Explanation:
At the same time the particles of sediment begin to stick to each other - they are cemented together by clay, or by minerals like silica or calcite. After compaction and cementation, the sedimentary sequence has changed into a sedimentary rock.
Hope that it helps!