Limitation: They may be more expensive and time consuming than lab experiments. Limitation: There is no control over extraneous variables that might bias the results. This makes it difficult for another researcher to replicate the study in exactly the same way.
Answer:
divide
Step-by-step explanation:
divide the first one by the second that might help
Answer: additional prop
subtraction prop
division prop
Step-by-step explanation:
Answer is in the screenshot.
