Answer:
chemotaxis of phagocytes
Explanation:
Histamine is a chemical involved in inflammation but it also has role as a neurotransmmiter in central nervous system and uterus It is synthesized by the two types of cells:  basophils and mast cells and it acts via binding to its receptors (histamine receptors). Roles of histamine are:
- vasodilatation and consequently decrease in the blood pressure
- increase vascular permability in the nose cavity (runny nose)
- regulates sleep-wake cycle
- stimulates gastric acid secretion in the stomach etc.
 
        
             
        
        
        
Answer:
Neuroplasticity or brainplasticity
Explanation:
Brain plasticity is the ability of the brain to modify its connections or re-wire itself. .
 
        
                    
             
        
        
        
Answer:
B)hydronium
Explanation:
This chemical structure is formed when an acid is disolved into water, as the cation (H+), which comes from the acid, cannot exist as such isolated in water (H20), hence the proton (H+) will be hydrated by a water molecule (H2O)
The union between H+ and H2O is due to the pair of electrons from oxygen and positive charge from H+
 
        
                    
             
        
        
        
Answer: becomes depleted of____
due to the overactive_____________
that are decomposing the surplus of
decaying organisms, which died due to the__________.
The bacteria use the oxygen for__________.
.
Explanation: Eutrophication sets off a chain reaction in the ecosystem, starting with an overabundance of algae and plants. The excess algae and plant matter eventually decompose, producing large amounts of carbon dioxide. This lowers the pH of seawater, a process known as ocean acidification.