Answer:
Topoisomerase
Explanation:
Topoisomerase is an enzyme that is involved in the unwinding of Deoxyribonucleic acid (DNA).  They are involved in double stranded DNA and they help to relieve the making of supercoils.
Topoisomerase play an important role during DNA replication, as the prevent the the twisting of the DNA double helix ahead of the replication fork. In other words, they ensure that the DNA open up for unwinding without being tightly wound.
 
        
                    
             
        
        
        
- Silk moths produce, well, silk (and collagen). Collagen is used for many medical-related purposes, making it very important to have! Currently, most collagen comes from cows, which have a history of causing allergic reactions in patients, while the collagen from silk moths is patient-friendly. 
- Silk is also considered one of our most valuable fibers. 
Hope this helps!
-Moiselle
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<em>Source:</em>
<em>“Silkworms Spin Medicinal Gold.” GNN - Genome News Network, http://www.genomenewsnetwork.org/articles/01_03/silkworm.shtml#:~:text=In%20their%20cocoons%2C%20the%20insects,Female%20silkworm%20moth%20depositing%20eggs. </em>
 
        
             
        
        
        
The term that can be used to describe evolution by natural selection is SCIENTIFIC THEORY.
Theory means "the best explanation so far."
Scientific theory is a work in progress. It is <span>a well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method, and repeatedly confirmed through observation and experimentation.
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It transports nutrients and waste in the body and also It regulates body temperature is the statement that  accurately describes the roles of water on Earth.
<u>Explanation:</u>
- The earth's surface covered with 71% of water. Water is considered to be the basic substance for the survival of the biological organisms an to make the sustain of life exist in the earth.  
- It is mainly responsible for the rainfall and the growth of vegetation.  
- The water is used to possess many biological processes such as the transport of nutrients into blood cells results in the growth development of the organisms. It also helps to regulate the boy's temperature.
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