Which scientific design has limitations due to oversimplification?
in a study of the interaction of air quality and crop yields, a computer compiles
countries around the world.
in a study of the effectiveness of a new drug on cholesterol, rhesus monkeys
period of six weeks.
in a study of the relationships between plants and their pollinators, researchers
day for three months.
in a study of the effect of lawn fertilizer on the health of a backyard pond, biolog
flask to represent pond ecosystems.