The answer is a low-density particle
        
                    
             
        
        
        
<h2>
Answer:A</h2><h2>All life on Earth stores its genetic material inside the nuclei of its cells. </h2>
All life on Earth has DNA. All life on Earth has the same set of mutations in its genes
 
        
        
        
Answer:
Is released into the air through stomata
Explanation:
Oxygen and hydrogen both exists as gaseous molecules in the atmosphere. However, one of them (oxygen) is a product of photosynthesis while the other (hydrogen) is one of the constituents of the molecule that starts the process of photosynthesis. 
According to this question, the X used in the attached diagram is the role of oxygen in photosynthesis. Oxygen is released as a product of photosynthesis and goes out of the plant into the air via the STOMATA. Hence, the gas released into the air via stomata is OXYGEN.
 
        
             
        
        
        
Answer:
b 
Explanation:
they see/observe the sky and the grass