Answer:
Classification of trees in a forest is an example of a descriptive investigation
Explanation:
A descriptive investigation is aimed at describing/quantifying the characteristics of a given population or natural system. In descriptive research, the characteristics of the system are classified into descriptive categories. This type of investigation does not involve causal associations where a variable is tested to see if it will affect other variables. Examples of descriptive research include the classification of chemical elements in a periodic table, observing human social behavior under extreme conditions, etc.
