Goblet cells are glandular cells, or unicellular mucus-secreting glands, present in the epithelial lining of the mucous membranes of the respiratory tract and digestive system. The mucus produced by a goblet cell is secreted in the light of the tubule in question by exocytosis and diluted with water in order to coat the epithelium exposed to harmful actions present in the digestive or respiratory tubes. [1] It has an important function of keep moist and avoid desiccation of the epithelium, particularly in the airways.
        
             
        
        
        
Answer;
The two processes used by producers to obtain energy are photosynthesis and chemosynthesis.
Explanation; 
Producers are those organisms that can make their own energy in an ecosystem using biochemical processes. These biochemical processes are photosynthesis and chemosynthesis.
Photosynthesis involves use of energy from the sunlight together with water and oxygen to make simple sugars. The process converts solar energy to chemical energy (simple sugars). 
Chemosynthesis involves use of chemicals as the energy source, rather than sunlight , to make simple sugars such as glucose.  
Glucose from both processes is then used for respiration to generate energy or stored in form of starch. 
        
                    
             
        
        
        
Surface craters refers to a short-term environmental change would a very small asteroid or comet impact on Earth most likely cause.
 
        
                    
             
        
        
        
Answer:
first generation
Explanation:
they first generation shows these
 
        
                    
             
        
        
        
In the given food chain above, the organisms that has a maximum biomass is the grasshopper and the organism that has the least amount of energy from the sun is the hawk. The hawk receives the least amount of energy because according to this food chain, it is the hawk that is located on the last part of the food chain.