Answer:
B: an atom
Explanation:
An atom is the smallest substance that can exist in isolation.
Hence, if a piece of copper is continually divided, eventually the smallest particle you would get in an atom.
That instant ... typically some moment on june 21 or 22 ... marks
the beginning of the northern hemisphere Summer.
Explanation:
algae(producer)>mosquito lavae>minnows >trout >herons