<span>Newton first law is called inertia, or the force an object has to resist unbalanced forces that are placed upon it. The more mass an object has, the more inertia an object has. The less mass an object has, the less inertia an object has.</span>
        
             
        
        
        
Answer: they are specific in action 
Explanation: The similarity between cell receptors and antibodies is that both are specific in action. They bind to their specific targets. 
These targets can be determined by the shape of the receptor or the antibody. shape of a protein has a profound effect on its functions 
 
        
             
        
        
        
Answer:
- A, B, C and D are: elements or molecules
- A and B are: reactants
- C and D are:  products
Explanation:
The expression "A + B <--> C + D" represents a chemical equation. A chemical equation represents the "mixture" of molecules or elements that will react and form other molecules and elements, so we can say that A, B, C and D represent molecules or elements.
But not only that. In a chemical equation, the elements and molecules that are before the symbol "<-->" represent the reagents in the equation. Therefore, A and B are the reagents. The elements or molecules found after the symbol "<-->" are the products of the reaction. Therefore, C and D are the products.
 
        
                    
             
        
        
        
<span>Crop
is the part of the digestive system you would see in a cross-section anterior
to the gizzard in a worm. Crop is a thin wall organ that acts as a temporary food
storage chamber. The esophagus leads to the crop and the organ next to it is
the gizzard which serves as the food grinding chamber.</span>