Difficult because it went against basically everything that was previously believed to be true
Answer:
E or "The dust found in the interstellar medium aggregates to form the disk."
Explanation:
Used G00GLE, and it said "One says that galaxies were born when vast clouds of gas and dust collapsed under their own gravitational pull, allowing stars to form."
(couldn't use the search engine's actual name)
True. Because the chemical messages are called hormones.
D. The tendency of a cell to maintain a stable internal environment.
Answer:
it's D. potential difference
Explanation:
