Answer:Negative correlation
Explanation:
Correlation refers to an association or relationship that exist between two variables which doesn't mean causation.
Negative correlation occurs when a relationship between these two variable is negative in a way that when one variable increases the other one decreases
A perfect negative correlation is statistically represented by a value of -1,and +1 represent a perfect positive correlation which occurs when one variable increases and the other one also increases.
Answer: Birth rate is the amount of births in a certain amount of time in a certain country. For example, if there are 1000 births every 5 minutes, that is a birth rate. An increasing birth rate would be one that is growing all the time, and it would increase population because as the birth rate is growing, more people are born, and there are more people in the population.