Question

a scientist makes a graph showing population growth rates for the future of 10 countries. which is a necessary source of error in his graph? scientists often disagree with one another. no one can predict future trends accurately. the countries he chose may not be the best for his purpose.

Explanation:

Predicting future population growth rates is inherently uncertain. There are many variables that can change over time such as policy - changes, natural disasters, and technological advancements that cannot be accurately predicted.

Answer:

No one can predict future trends accurately.