<span>Early
investigators thought the oxygen produced by photosynthetic plants came from
carbon dioxide. In fact, it comes from water. The water plays an important role
in the production of oxygen. The oxygen that we are breathing comes from water.
In the process of photosynthesis, water would be split into oxygen, hydrogen
ions and electrons. The oxygen product would then be released by the plants.</span>
Answer:
Due to more open ecological opportunities on a given island, greater differences occur between island species. A single lineage diversifies rapidly, and descendant populations occupy many habitats and ecological roles.
Explanation:
D-walls and doors would represent the cell membrane
