Answer: The reaction is exothermic
The  value is negative.
 value is negative.
Heat is a product.
Explanation:

Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat and  for the reaction comes out to be positive.
 for the reaction comes out to be positive.
Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and  for the reaction comes out to be negative.
 for the reaction comes out to be negative.
The substances which are written on the left side of the arrow are reactants and the substances which are written on the right side of the arrow are products. Thus heat is a product.
 
        
             
        
        
        
Answer is B.
As the diaphragm contracts and flattens, it increases the volume of the thorax where the lungs are located. This results in a decrease in pressure (Boyle’s Law, if you know it) that creates a pressure gradient from outside to inside. This is what causes air to move into the lungs.
        
                    
             
        
        
        
<h3> 
The supplements that are minerals are</h3>
- calcium
- sodium
- iron
- zinc
 <u><em> Explanation</em></u>
-  calcium   and sodium  are major  minerals   which are required  by the body for 
       calcium-  needed  for muscle,hearing bone and  for the support of synthesis and function of cells
      sodium-   is needed to control blood  pressure  and  also for proper  muscle and nerve  function
-  Zinc  and iron are  required   in trace and both are needed for good health
 
        
        
        
The type of energy used is kinetic energy. Kinetic energy is the energy of motion. 
        
                    
             
        
        
        
Answer:
your answer gonna be 20 miles