Answer:
a gun that either fires or it doesn't
 
        
                    
             
        
        
        
Answer:
wheres the diagram :v.......
 
        
             
        
        
        
Fertilizer can lead to algal bloom in aquatic ecosystems, which means that its usage may lead to oversaturation of algae in the seas and oceans. Although algae are good for these kinds of waters in limited amounts, when there are too much of them it can stifle all other life, thus having negative effects on aquatic ecosystems. 
        
             
        
        
        
At least two of the black offspring should be heterozygous
        
             
        
        
        
Answer:
Solar energy is converted into chemical during the process of photosynthesis. 
Explanation: 
Photosynthesis is a process in which solar energy is converted into chemical energy i. e. glucose. In photosynthesis, carbondioxide enters into a leaf from small opening called stomata and water is absorbed by the plant from the soil in the presence of sunlight produces glucose and oxygen. Oxygen is released in the atmosphere while glucose is stored in different parts of plant i. e. roots and stem etc.