Answer: <span>Marbles placed inside a hollow sphere are used to describe protons in a nucleus.
Models are artificial representations used to show some phenomena or features of the real world.
In this case, it has been used a sphere and marbles, to represent the fact that nuclei of atoms contain inside some smaller partilces which are the protons.</span>
Answer:
In comparison to the real thing, a model can help you visualize or picture in your mind something that is difficult to see or grasp, as well as express ideas and understand the process. Models, on the other hand, cannot incorporate all of the features and accuracy of an actual human body part since they must keep it simple enough to understand, which limits the models, despite their value.
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Answer:
You can look it up so 79-1 because appendix so 78
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Good luck on your bio paper
It's called puberty. The moment in time where a children most likely go from kinda ugly to less ugly. LOL. You are all amazing. !!!!!!