According to reaserch ,
The presence of cellular structures in eukaryotic cells are similar to prokaryotes. Mitochondria and chloroplasts are thought to have once been prokaryotic cells that were incorporated into larger prokaryotic cells. There are a number of biochemical similarities between the eukaryotic organelles and prokaryotic cells. Eukaryotic organelles are still the same size as the prokaryotic cells from which they are believed to have been derived.
The answer is; B
Not all disturbances to ecosystems are undesirable. The fact, however, is that disturbance does change the structure of the ecosystem including impacting the biodiversity. The disturbance may benefit some species while it may be disadvantageous to some species. An example is that while a volcanic eruption might devastate a whole ecosystem, the recovered ecosystem after time may have an increased biodiversity than before.
Standing wave - A standing wave is a wave that remains in a constant position.
the answer is D. The soil becomes able to hold more moisture.