Answer:
The density of the liquid is 0.87 g/ml
Explanation: 
Density = 17.4g divides 20ml = 0.87 g/ml (rounded to one significant figure)
 
        
                    
             
        
        
        
<span>Science is a practice of gaining comprehension of the nature of materials and phenomena by gathering and evaluating evidence. A scientific study is based on an hypothesis, a theory of causality. As the body of scientific knowledge increases, the design of scientific studies is informed by previous discoveries.</span>
        
             
        
        
        
Answer:Lipids are organic molecules which can be used for long-term energy. These includes fats, waxes, sterols, glycerides, phospholipids, etc. Lipids contain more energy per unit mass which makes it much lighter. However, their insolubility to water makes them harder to transport.
Explanation:
 
        
                    
             
        
        
        
Harweda cares for the bird and begins thinking about its comfort as well as his own.