ANSWER Importance of Controlled Variables
Lack of awareness of control variables can lead to faulty results or what are called "confounding variables." Additionally, noting control variables makes it easier to reproduce an experiment and establish the relationship between the independent and dependent variables
The answer is D (St. Louis). St. Louis and Jefferson City are both in Missouri.
Answer: How to Keep Birds From Nesting on Porch – 7 Effective Tips
Use citrus repellent.
Count on your cat.
Remove dried leaves, twigs.
Put the feeder far from your porch.
Install sets of bird spikes.
Install reflective and shiny objects.
Display some wind chimes.
Explanation: