Answer:
I believe the answer is B  
Explanation:
I hope this helps
 
        
             
        
        
        
 Answers/ Explanations: 
- Water is considered a <u>'Natural'</u> resource (Fresh water is also considered a <u>'limited'</u> resource.
- Oil, coal, and natural gas are considered <u>'Non-renewable'</u> resources.
- <u>'Chemical'</u> energy is able to be replaced within the ecosystem for human use.
- A farmer who wants to produce the best crop yield will use '<u>Precision Farming.'</u>
- When a pollutant increases in concentration at higher levels of the trophic level, <u>'Biomagnification'</u> can harm organisms at the highest levels.
 
        
                    
             
        
        
        
Answer:
C. The yellow butterflies were not eaten by birds and were able to reproduce more.
Explanation:
what we can conclude from the passage that the yellow butterflies reproduced more.
 
        
                    
             
        
        
        
Answer:
They go through many developmental changes. ... Studies by independent researchers show a link between pesticides and frog deformities.
Explanation:
 
        
             
        
        
        
Answer:
The number of chromosomes in sex cell must be haploid (1n) as compared to body cell which is diploid(2n).
Explanation:
Body cells are diploid while the sex cells are haploid. We can say that sex cells contain half number of chromosomes as compared to body cells.