Answer: Geologists must look closely at the physical properties of a mineral. These properties can include: color, streak, hardness, cleavage, specific gravity, crystal form, and others. 
Explanation:
 
        
                    
             
        
        
        
Answer:
It is a compound sentence.
Explanation:
Compound sentence contains two independent clauses.
 
        
             
        
        
        
Prokaryotes dont have a nucleus
        
                    
             
        
        
        
Answer:
<em>The correct option is A) sandstone aquifer</em>
Explanation:
Groundwater can simply be described as water which is present inside the Earth's surface in structures called aquifers. Aquifers are materials which have an ideal porosity and permeability which allow water to flow through them. Aquifers  are materials like sand, silt or rocks. 
Sandstone aquifers can trap waste particles like bacteria while allowing the water to easily flow. Hence, they can be used for sewage from a ruptures septic tank.