Scientific methods must be supported by observations and results from many investigations and are not absolute.
        
             
        
        
        
A state of biological balance, or _HOMEOSTASIS_, is important for the survival of individual cells and _the whole organism_ alike.
        
             
        
        
        
Answer:
The correct answer is the last statement. 
Explanation:
Amphipathic refers to a substance that comprises both hydrophobic and hydrophilic surfaces. Thus, the given first three statements are incorrect. The amphipathic helices are witnessed on the proteins surfaces in which the hydrophilic region associates with the aqueous phase and the hydrophobic regions associate with the hydrophobic component of the protein.  
Both the amphipathic sheets and helices exhibit primarily the hydrophobic or hydrophilic residues on one face. Thus, the correct answer is the last statement.  
 
        
             
        
        
        
 Biodiversity is intimately linked to the production of ecosystem services. ... Invest models habitat quality<span> and rarity as proxies for biodiversity, ultimately estimating the extent of </span>habitat<span> and vegetation types across a landscape, and their state of degradation.</span>