Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities
 
        
                    
             
        
        
        
Answer:
d
Explanation:
endocrine system controls all biological processes
 
        
             
        
        
        
Insulin is such a vital secretion of the pancreas in the human body that without it, our body would not function normally. It is responsible for breaking down the food we eat and converting it to energy and then storing that energy. Lack of insulin means that the pancreas are not producing insulin which leads to diabetes. That means that there is a concentration of glucose in the blood rather than being distributed to cells to carry out functions. This can lead to kidney failures,  nerve damaging stomach problems and problems in the eyes.
        
             
        
        
        
Blood clots will do this.  Cutting off blood flow while also increasing blood pressure.  Also, if the viscosity (thickness of the blood) is thick which will slow down the flow and cause the body to use more effort to pump blood. 
 
        
             
        
        
        
<span>Cell membrane needs to allow and exit the materials that enter the cell because the cell needs nutrients and these nutrients are converted into molecules that aid in many cellular activities like repair, divide and form structures and biomolecules. 
Also to excrete wastes and other harmful materials for the cell.
This continues because the cell wants to attain homeostasis.
Homeostasis is the state where the internal and external part of the body maintains and establishes balance and equilibrium. This is achieved through cellular processes in the body, the integumentary system regulates the body temperature, the hypothalamus –hunger and thirst of the individual and other interrelated organ systems that make the body healthy and in the state of equilibrium. Now, when diseases or disorders appear they disrupt the organ systems in the body thus, causing imbalance state –high fever, inability to focus and etc.<span> 
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