b. phosphate. The polar head of a phospholipid is negatively charged and is made up of phosphate molecules. This polar head region attracts water (hydrophilic) and is positioned outward to interact with water.
 
        
             
        
        
        
Explanation:
villi are small finger like structures in the small intestine 
 
        
                    
             
        
        
        
Answer:
There is an increase in demand for higher quality and quantity of food and other products.
Explanation:
There is an increase in demand for higher quality and quantity of food and other products. So, there is a huge requirement for technological innovation.  Investment is needed in research and development to develop crops that are pesticide-free, resistant to disease, and able to face various weather conditions.  Vertical farming and carbon-capture technology can be used to meet growing world food demands.