Answer:
Mutations can create entirely new alleles in a population which changes the allele frequencies of a gene pool.
 
        
             
        
        
        
Answer and Explanation:
The mouth is part of the digestion system.
Mechanical Digestion is the physical motion our mouth makes to chew up the food. We grind up the food with our teeth, then swallow the food into the next part of the digestive system.
Chemical Digestion in the mouth is the saliva our mouth produces. It breaks down the food along side the mechanical part of the mechanical digestion.
<u><em>#teamtres #PAW (Plant And Water)</em></u>
 
        
             
        
        
        
Answer: Climate change
Explanation:
UN Climate Action Summit 2019 was organized in 2019 to discuss the domain of global climate change research. According to this dangerous impact of climate will influence the growth of new generations to come. This included various participating organizations like World Meteorological Organization, Panel on Climate Change, Earth league and global framework, UN Environment, Global carbon project and others. 
 
        
             
        
        
        
Answer: A mutualistic and A a decrease in the number of corals, so buy coral to help the local economy 
Explanation:
 
        
             
        
        
        
This process is called Melting.