I’d say the best answer is a and c
        
                    
             
        
        
        
Answer:
all the inhabitants of a particular town, area, or country
Density-dependent limiting factors cause a population's per capita growth rate to ... Image credit: Environmental limits to population growth
Explanation:
 
        
             
        
        
        
Because comets are darker colored so they need light to shine on them to be seen in the dark skies of space.
        
             
        
        
        
Forests are only renewable as long as careful planning is done to determine how many trees to cut and to nake sure new trees are planted to replace them.
 
        
                    
             
        
        
        
I would assume because of where san francisco is i suppose that it just depends on where your located at