Answer:
Theodor Schwann and Matthias Jakob Schleiden
Explanation: in 1839 the two elucidated that all plants and animals were made up of cells
A you use apparent magnitude to find the absolute magnitude
11 Systems would happen to be
- Muscular
-Endocrine
-Circulation
-Lymphatic
-Respitory
-Integumentary
-Repreductive
-Urinary
-Digestive