The tenth day because its half of 20
brainliest?
        
             
        
        
        
The study of tree rings is called dendrochronology. Trees produce a single growth ring each year and by studying the size and composition of each ring scientists can get information about the age of the tree, available nutrients in the area, and general climatic conditions. A relatively small ring may indicate a year when there was very little rainfall and a larger ring indicates favourable conditions for plant growth. 
Ice cores hold information on past global volcanic activity and past atmospheric conditions. Tiny bubbles in the ice cores give information on the concentration of gases in the atmosphere. Ice core data plays a key role in linking the increase in carbon dioxide concentrations to present day global warming.
        
             
        
        
        
The feature that you need to use in examining and make a
determination whether the skeletal remains in the pelvis is either male or
female is by analyzing its size and construction. It is because males have
larger pelvis bone and are robust elements compared to females who have smaller
and are light in terms of construction.
 
        
                    
             
        
        
        
Answer:
A. Live with little water needed
 
        
             
        
        
        
Microevolution is small genetic changes within a specific population or a group within a population, occurring within a short time span, like one generation. Macroevolution is big changes across species and over long spans of time.