Global winds rising near equator and cold air sinking near the poles
        
                    
             
        
        
        
A semipermeable membrane is a type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by diffusion—or occasionally by more specialized processes of facilitated diffusion, passive transport or active transport.
        
             
        
        
        
True, though the Hadean period is one exception.
        
                    
             
        
        
        
The best answer is option D.
Acid rain is simply rainfall that has been rendered acidic due to water vapor reacting with nitrogen oxide ad sulphur dioxide very high up in the atmosphere.
Acid rain is not only a threat to the ecosystem and environment, but also seriously damages buildings and sculptures.
Marble and limestone are especially vulnerable to acid rain. This is because the two building or construction materials contain calcite which is easily dissolved by acid.
Concrete surfaces and paint finishes are also seriously damaged by acid rain.
        
             
        
        
        
 Answer:
A nerve is actually a long threadlike bundle of dendrites that conduct electrical impulses. Dendrite word derived from the Greek word 'dendron' which means tree. They carry messages in the form of electrical impulses to cell body, there are also wire like nerves called axon.
Explanation:
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