Answer:Ice melts when heat energy causes the molecules to move faster, breaking the hydrogen bonds between molecules to form liquid water. In the melting process, the water molecules actually absorb energy.
Explanation:
 
        
                    
             
        
        
        
Answer:
The allele frequency changed
The light moths blended in with the light-colored trees. However, the Industrial Revolution changed the tree colors. After the pollution from the Industrial Revolution started affecting trees, most of the collected peppered moths were of the dark form.
 
        
             
        
        
        
Answer:
incoming Paleoindians, the first Americans, who allegedly hunted them to extinction.
 
        
             
        
        
        
A peptide bond is formed by a condensation (water-loss) reaction between the carboxyl group of oneamino acid<span> and the </span>amino<span> group of the next </span>amino acid<span> occurring in a protein. Thus, proteins are formed by the linear </span>arrangement<span> of </span>amino acids<span> in a particular order</span>
        
             
        
        
        
Answer:
bone marrow
Explanation:
These are the blood cell-forming adult stem cells found in bone marrow. Every type of blood cell in the bone marrow starts as a stem cell. Stem cells are immature cells that are able to make other blood cells that mature and function as needed. These cells are used in procedures such as bone marrow transplants.