Answer: The answer is A.
Explanation: it reflects and accurate out come of the chemical reaction. 
 
        
             
        
        
        
Answer:
Penicillin G
Explanation:
I remember this vaguely, remove or whatever if wrong.
 
        
             
        
        
        
The right option is; b. anticipatory socialization.
Playing house as a child is a form of anticipatory socialization.
Anticipatory socialization is the process in which an individual changes his behaviors or learn new norms and values in preparation for a change in his role in the future. Playing house which is children’s game is a form of anticipatory socialization because when children play the game, they take the roles of a nuclear family such as children, parents, and newborns. Due to children’s experience with the game, they are prepared for adulthood.  
 
        
                    
             
        
        
        
Answer:
The water vascular system of echinoderms (B) functions in locomotion and feeding. 
Which of the following combinations of phylum and description is correct?   (C) Platyhelminthes—flatworms, gastrovascular cavity, no body cavity
Explanation:
Echinoderms are marine animals. They have a water vascular system that make them able to move (locomation), respiration and food and waste transportation. This system is full of different canal along the body.  
Echinodermata has not a radial symmetry as a larva, in fact it has a bilateral symmetry and coelom present. When it comes to Nematoda, they are roundworms and have a pseudocoelomate. Finally, porifera has a gastrovascular cavity and no coelom.