Matthias Jacob Schleiden was a German botanist who, with Theodor Schwann, cofounded the cell theory. In 1838 Schleiden defined the cell as the basic unit of plant structure, and a year later Schwann defined the cell as the basic unit of animal structure.
I think its Uracil replaces thymine on rna
Hope this helps
Answer:
Freshwater biomes have less than 1% salt and are typical of ponds and lakes
