Answer:
ask a question and predict what the outcome will be
Explanation:
when using the scientific method you always have to ask a question and make a hypothesis
The structure of the ear that conducts sound waves to the middle ear is the oval window.
Answer:
If the petri plates are kept open for the longer duration of time then there are chances of cross contamination.
The contamination can be defined as growth of undesired microbes in the petri dishes or tubes which is no longer useful for the experiment.
The tube if kept open will develop the growth of contaminants in it. It can be cross contamination as well.
To avoid contamination the tubes and dishes should not be kept open for a longer duration of time.
Answer: It is a food chain
Explanation: A series of steps including species consuming another in a direct chain is defined as a food chain
