Glassy igneous rocks (i.e. obsidian) are cooled very rapidly.
        
             
        
        
        
Osmosis only talks about water molecules 
Diffusion talks everything other then the water molecules. 
So, 
Osmosis : water molecules travel from a region of a higher water potential to a region of lower water potential through a partially permeable membrane via osmosis 
Diffusion : Travels from a region of higher concentration to a region of lower concentration through a partially permeable membrane via diffusion
        
             
        
        
        
Answer:
The southern hemisphere is tilted towards the Sun at the point of the year.
 
        
             
        
        
        
Answer:
45 mg of caffeine in one cup of instant coffee.
 
        
                    
             
        
        
        
Answer:
<u><em>Ancestors</em></u>
Explanation:
Ancestors can be described as the persons from which a particular human being originated. In a broader perspective, it is referred to family history of a person. Scientists believe that all organisms on Earth originated from a common ancestor which were the prokaryotes. The prokaryotes with time gave rise to the eukaryotes. Common descent is the phenomenon in which organisms having common ancestors are referred.