Answer:
somatic:any cell of a living organism other than the reproductive cells.
gametes:a mature haploid male or female germ cell which is able to unite with another of the opposite sex in sexual reproduction to form a zygote.
Explanation:
 
        
             
        
        
        
Nests, small organisms such as lizards, snakes, small birds, rock formations, skeletons of small animals.
        
             
        
        
        
I’m pretty sure the answer is 4. 
Evaporites are rocks formed by the evaporation of water. They are sedimentary rocks. Common examples of evaporites include gypsum, anhydrite, and halite (common salt.) I hope this helps! :)
        
                    
             
        
        
        
Answer:
Earth's atmosphere filters out harmful radiation from the sun.
Explanation:
The sun is earth's star and sunlight helps light up and warm the earth and also helps in the process of photosynthesis. Sunlight on the other hand, produces harmful rays called Ultraviolet radiation or UV rays.
These ultraviolet radiation is dangerous to our skin and ultimately our body as a whole. Fortunately for us, the earth's atmosphere has a protective layer called the Ozone layer. The Ozone layer serves to filter out and block the harmful ultraviolet radiation and prevent it from reaching the earth, thereby protecting us. 
Sadly though, the Ozone layer is getting depleted by human activities which emit harmful gases like carbon dioxide into the atmosphere. Activities such as oil drilling, automobile emissions, destruction of forests etc. These activities affect the Ozone layer leading to it's gradual disappearance and letting in the harmful UV rays. A phenomenon referred to as global warming.
 
        
                    
             
        
        
        
Monitoring water changes can provide clues about the activity of a volcano. A sudden change could predict a volcanic eruption. Hydrologists also identify the paths that water takes as it flows down a volcano's side. Understanding how water flows can help us understand how lava might flow.