Question

examine the situation. situation: a biologist is in the wild notating bird calls. the biologist records at what time of the morning each bird starts to call over the span of a month. what type of study is this situation? not a study observational study survey experiment question 2 1 point examine the situation. situation: a biologist is testing the best fertilizer to use for plant growth. the biologist seeds five fields of corn. one field has no fertilizer and the other four fields each use a different brand of fertilizer. the biologist then records the average plant height over time for a growing season. what type of study is this situation? observational study not a study experiment survey

Explanation:

1. In the first situation, the biologist is simply observing and recording bird - calls without interfering or manipulating variables. This is characteristic of an observational study.
2. In the second situation, the biologist is actively manipulating the independent variable (type of fertilizer) to see its effect on the dependent variable (average plant height). This is the nature of an experiment.

Answer:

1. B. Observational Study
2. C. Experiment