Answer & Explanation:
a) a) Mutualistic relationship differs from parasitism because the first one benefits both of the involved organisms. Otherwise, parasitism benefits only one of the organisms and it can harm the host. Therefore, the parasite would have to be smaller than the host and it would be somehow extracting energy from the host. 
b) The direction of evolutionary changes would follow some kind of pattern, like coevolution. Therefore, analyzing the phylogenies individually and then contrasting them, would help to understand how the host, as well as the parasite, have been evolving. 
c) The phylogeny would also help to understand what changed first, or if they changed together as a result of coevolution. 
 
        
             
        
        
        
The correct answer is Mitosis. 
The mitosis is a type of cell division, in which the parent cell produces a similar type of daughter cell. The daughter cells, which are formed by the process of the mitosis would have the same number of the chromosomes and the ploidy of the daughter cells would also be same as the parents. In the sexual reproduction, the process of meiosis result in the formation of haploid cells during the process of gamete formation. Hence, meiosis, sexual reproduction, and gamete formation are incorrect answers.
 
        
                    
             
        
        
        
Answer:
There are four steps in secondary Succession.
1. 
1st year after forest fire, flood, or farmer abandons a field: Weeds grow,
usually crabgrass.
2. 
2nd year: Seeds blown in or carried in by animals become new weedy
plants, such as horse-weed.
3. 
5 to 15 years: Small pines begin growing in the area, gradually become a
pine forest
4.
As older pines die hardwoods succeed them if the climate supports them.
Explanation: