Which scientific design has limitations due to oversimplification?
a. in a study of the interaction of air quality and crop yields, a computer compiles data that are collected by farmers from countries around the world.
b. in a study of the effectiveness of a new drug on cholesterol, rhesus monkeys receive different strengths of the drug over a period of six weeks.
c. in a study of the relationships between plants and their pollinators, researchers observe twenty plant plots in a meadow every day for three months.
d. in a study of the effect of lawn fertilizer on the health of a backyard pond, biologists grow two colonies of duckweed in a large flask to represent pond ecosystems.

d. In a study of the effect of lawn fertilizer on the health of a backyard pond, biologists grow two colonies of duckweed in a large flask to represent pond ecosystems.

Explanation:

Oversimplification in a scientific design is a misconception which scientists think that the scientific method or design is a step by step linear process but it is complex in nature. The scientific process information making observation, creation of hypothesis, testing the hypothesis by experimentation and conclude the results.

d is the correct option this is because of the fact that ecosystem is a community where many living species interact among themselves and with their non-living physical environment. In the option d. the demonstration of only two colonies of duckweed is not sufficient to show the effect of lawn fertilizer on the health of the backyard pond. The other animals and plants must also be shown to support an appreciable sample size of variables.