The shadow of a groundhog ( or anything else ) is determined what?

The size, length, and height of the figure are the main factors which determine the shadow of a organism.

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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