Why kinds of scientific investigations in involve making observations?

Scientific investigations often involve making observations to gather data, formulate hypotheses, and test predictions. Observations can be qualitative, such as noting behaviors or characteristics, or quantitative, involving measurements and numerical data. These observations are crucial in fields like ecology, where researchers might study animal behavior in natural habitats, or in chemistry, where they observe reactions in experiments. Ultimately, observations help scientists understand phenomena and draw conclusions based on evidence.