D. They come from other living things
Explanation:
The cell theory states that all living things come from preexisting cells.
Answer: In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. ... Animal cells simply have a cell membrane, but no cell wall.
Explanation:
I believe it should be 94%.Normal arterial oxygen is approximately 75 to 100 millimeters of mercury. Values under 60 mmHg usually indicate the need for supplemental oxygen. Low blood oxygen is known as hypoxemia. Normal pulse oximeter readings usually range from 95 to 100 percent. Values under 90 percent are considered to be low.
Explanation:
Adenine always pairs with thyamine or uracil also.
Cytosine always pairs with guanine
Hope this helps!!
They are neither, they do not have the mechanism to ingest or produce food.
