Question

practice it! select the statement(s) that accurately identify limitations of experimental investigations. there is no precision during experiments. some experiments cannot be reproduced in the natural world because of cost or ethical concerns. small things can make the experiment unreliable or invalid. not all experiments are typical of real - life situations or events as they would happen in nature. variables are difficult to control, and the test variable cannot be found.

Explanation:

Variables in experiments can be hard to control, and some experiments may not be reproducible due to cost or ethics. Also, small - scale experiments might not accurately represent real - life, and not all experiments mirror real - life situations. These are common limitations of experimental investigations.

Answer:

"Variables are difficult to control, and the test variable cannot be found.", "Some experiments cannot be reproduced in the natural world because of cost or ethical concerns.", "Small things can make the experiment unreliable or invalid.", "Not all experiments are typical of real - life situations or events as they would happen in nature."