I am thinking the rock that forms from lava that cools quickly is D) Obsidian.
        
                    
             
        
        
        
C. <span> prokaryotes convert nitrogen-containing molecules into forms that can't be used by other organisms.</span> 
        
             
        
        
        
Fractures are common injury during childhood with 8 to 12 percent. For toddlers like of a 3 years old femur fractures usually comes from a low energy fall. The doctor after an x-ray puts the affected leg in a Spica cast. In order to obtain history of what happened prior and during the injury, it would be better to ask the parents first especially if they are present during the incident. Afterwards, if they are not present those who witnessed the incident can be asked like if a teacher was present she can attest to what really happened.
        
             
        
        
        
Answer:
Biodiversity boosts ecosystem productivity where each species, no matter how small, all have an important role to play. For example, A larger number of plant species means a greater variety of crops. Greater species diversity ensures natural sustainability for all life forms.
Explanation: