Alright bud the best answer to this question would be that one of the first scientists of the Renaissance to advance taxonomy through first hand observations was Cordus 
        
             
        
        
        
Answer:
A.
Explanation:
All other options are simply situational, while cold periods are usually seasonal.
 
        
             
        
        
        
Answer: d. The ecosystem reached its carrying capacity, and was not able to support continued population growth.
Explanation: 
The carrying capacity can be defined as the maximum population size of the species that habitat or ecosystem can support or sustain on the basis of availability of food, water and other necessities. This is an important factor which keeps a balance of the population of a species in a particular region or ecosystem. 
On the basis of the above information, The ecosystem reached its carrying capacity, and was not able to support continued population growth is the correct option to level off the rising populating of the birds. 
 
        
                    
             
        
        
        
Answer:
anaphase
Explanation: The third phase is anaphase. This phase only takes about 0.8 percent of the cell cycle to complete, which is the shortest time required out of all the phases. During anaphase the sister chromatids, or the two identical parts of a chromosome, are pulled apart to opposite ends of the cell by the spindle fibers.