Answer:
-Animal communication is context driven—they react to stimuli, or indexes and Humans can talk about remote, abstract, or imaginary things that aren't happening in their immediate environments.
-Any gender of human can use the same languages but in the animal world only some species can speak between the same gender
-The way that animals communicate are biological, or inborn but Humans need to acquire language —words must be learned.
 
        
             
        
        
        
Answer:
it is the mechanism of evoluition
Explanation:
evolution is natural because it happens without human interferance from humans and the traits are not desired by humans, but by the plants themselves
 
        
                    
             
        
        
        
Answer: option D - is initiated by the buildup of dead cells and bacteria 
Explanation:
Inflammation is a medical condition that affect a part of the body, consisting of congestion of the blood vessels, with obstruction of the blood current, and growth of morbid tissue. It is manifested outwardly by redness and swelling, attended with heat and pain.
Note that the CONGESTION and OBSTRUCTION of blood vessels is INITIATED by buildup of dead cells and bacteria.
 
        
             
        
        
        
A) A metal forms a + charged ion, so D2+
B) A nonmetal forms a - charged ion, so A-
C) C2-
D) B+