Start with the one that you know better the beginning of essays are hakf the tine awkward anyway.
        
             
        
        
        
There are 
50 protons in tin
50 electrons in tin
And 69 neutrons 
Hope this helps
        
                    
             
        
        
        
Answer:
D
Explanation:
It's to identify the different insects
 
        
             
        
        
        
Answer:
badddd just look at NASA's 20-year time-lapse shows how Earth is changing
Explanation:
 
        
                    
             
        
        
        
From the options given above, the two structures that will provide positive identification of  a plant cell under a microscope are CHLOROPLAST AND LARGE CENTRAL VACUOLES.
Plant cells have some cell organelles which is unique to them, these organelles are not found in animal cells. Examples of such organelles are chloroplasts, large central vacuole, cell wall, etc. The chloroplast found in plant cells help the plants to trap energy from the sun during the process of photosynthesis. The large central vacuole found in plants play a critical role in turgor pressure of plants.