Answer:
it would be c 
Explanation: when the volcano erupted the huge blast sent the new species of tree seed into the air where they landed and begin to grow 
 
        
                    
             
        
        
        
Answer:
For example, addition of an orange chromic acid reagent to some compounds causes the chromium reagent to change to a blue-green color (Figure 6.37a). This is considered a "positive" test result, and in this case indicates the presence of a functional group that can be oxidized (alcohol or aldehyde).
 
        
             
        
        
        
To substances that are bonded together but can be taken apart
        
             
        
        
        
Step 1: 405kpa times 4cm^3 so 405/4=1620
Step 2: 1620 divide 6 so 1620/6=270
The final answer is 270Kpa
        
             
        
        
        
Answer:
The benefits of pesticides include increased food production, increased profits for farmers and the prevention of diseases. Although pests consume or harm a large portion of agricultural crops, without the use of pesticides, it is likely that they would consume a higher percentage.
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