Answer - Well to put it in short terms. 
Cells such as water cells or aquatic microorganisms need and required to have a large surface area increased. Because this helps them stay afloat without spending much amount of energy to float.
 
        
        
        
Deep water currents affect the number of organisms found in the area by circulating nutrients due to upwelling. Upwelling is a process where cold water surfaces and encourages nutrients to the surface. When exposed to sunlight, they initiate energy which keeps the flow of the ecosystem. 
        
             
        
        
        
The warmer the star, the bluer it will appear. The cooler a star, the more red it will appear. 
Proxima Centauri Red Dwarf Stars for example have significantly less heat, therefore their red color.
        
                    
             
        
        
        
Answer:
The word "precocious" means gifted.
 
        
                    
             
        
        
        
Answer:
Natural hazards are extreme natural events that can cause loss of life, extreme damage to property and disrupt human activities. ... Other natural hazards, such as tornadoes, can only happen in specific areas. And some hazards need climatic or tectonic conditions to occur, for example tropical storms or volcanic eruptions. Example of natural hazard:weather, volcanic eruption, tsunami, thunderstorm, etc.