Answer:
Calculate the age of an object by finding how much carbon-14 remains in the sample 
 
        
             
        
        
        
Answer:
0.023%
Explanation:
The Population growth rate is a change in population with time taken into consideration. It can be expressed with the formula
 where N is the total change in the population size, and t is time.
 where N is the total change in the population size, and t is time.
When immigration and emigration are factored in, we now have the formula;


 
        
             
        
        
        
Answer:
The water cycle is a process in which water is lost from water bodies and then it again comes back to earth in form of rain. This is how I know it, but the explanation is correct.
Explanation:
See,
- Water from water bodies evaporates and becomes water vapour due to heat
- This then reaches high altitudes, where it condenses with dirt to create small droplets thingy
- This then creates a cloud, which on correct saturation with water, makes it rains.
This cycle goes on continuously creating a cycle which is termed the water cycle.
Hope it helps
BYE
 
        
             
        
        
        
b is the answer  not sure why they keep deleting my answer  but its correct