Answer:
Homologous structures provide evidence for common ancestry analogous structures show that similar selective pressures can produce similar adaptations beneficial features Similarities and differences among biological molecules in the DNA sequence of genes can be used to determine species relatedness 
 
        
             
        
        
        
Can you show the chart please?
        
             
        
        
        
Answer:
An ecosystem exists within a biome. Biomes are home to many species of animals, which interact with one another to create an ecosystem.
Explanation:
An ecosystem is defined as "the interaction of plants and animals with nonliving things and each other." A biome is defined as "a large region of the world that has similar plants, animals and other organisms that are adapted to the terrain and weather of that region." 
 
        
             
        
        
        
1: In deep parts of the ocean fish have been without light for so long they evolve so they can no longer use their eyes.
2: plants underwater evolved to use chemosynthesis to survive.
This app still posts the answers so just quote me. Might I recommend using easybib. Also if you found this helpful make my answer the brainliest.