Answer: hey nice to see you again, the answer is B. Microscopes allowed scientists to see the cells.
Explanation:
Oxygen is something that activated Cellar Reapiration that convets nutrients into energy (ATP).
(133.9) x (595.296)= 79,710.1344
Answer with significant digits: 80,000
1.3 has two significant digits so 79,700 rounds up to 80000.
Yes, because it comes from a one thing and spreads throughout the entire space. Similar to dripping foot coloring into a glass of water, or spraying air freshener.
