Answer:
mitochondrion
Explanation:
centrioles are found in animals only, and chloroplast cell wall is found in plants only.
Hope it helps.
When you inhale (breathe in), air enters your lungs and oxygen from the air moves from your lungs to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathe out). Hope this helps
Steps of the Scientific Method
Make an Observation. Scientists are naturally curious about the world. ...
Form a Question. After making an interesting observation, a scientific mind itches to find out more about it. ...
Form a Hypothesis. ...
Conduct an Experiment. ...
Analyse the Data and Draw a Conclusion.