Answer:
Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features). Similarities and differences among biological molecules (e.g., in the DNA sequence of genes) can be used to determine species' relatedness.
Explanation:
 
        
             
        
        
        
Scientists found that the first living things were likely prokaryotic because eukaryotic are evolved from the prokaryotic only. 
<h3>What do you mean by Natural selection?</h3>
Natural selection may be defined as favorable variations that assist the organisms to survive and reproduce in a particular habitat. 
Individuals that are better suited to their environment are likely to have more offspring and pass their genetic material on to future generations. This theory is referred to as Natural selection. 
Scientists hypothesize that oxygen began to accumulate in the Earth's atmosphere after the appearance of living things with the ability to Photosynthesize. 
To learn more about Photosynthesis, refer to the link:
brainly.com/question/19160081
#SPJ1
 
        
             
        
        
        
████████▀▀▀████
████████────▀██
████████──█▄──█
███▀▀▀██──█████
█▀──▄▄██──█████
█──█████──█████
█▄──▀▀▀──▄█████
███▄▄▄▄▄███████
        
             
        
        
        
Answer:
A. metabolism
Explanation:
Metabolism is the bodily process used to convert food into energy.
To survive, the body must use energy. Energy is important to perform daily tasks as big as moving and as small as undergoing mitosis. All of this energy comes from the food we eat.
Metabolism is a complex process that works to break down the calories within food and convert them into energy we can use.
 
        
             
        
        
        
Evaporating water is engorged mic.