In the 1830s, two scientists named Matthias Schleiden and Theodor Schwann stated a theory we now call the cell theory. Which of these statements is part of the cell theory?
a
All cells look the same.
b
Cells sometimes arise by spontaneous generation.
c
The life-sustaining activities of an organism do not take place in the cells of the organism.
d
All cells come from other cells.

I would say D. All cells come from other cells

Explanation:

Because new cells arise from existing cells.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

answer7,570,82356 cubic centimeters;