Autotrophs are able to live without heterotrophs.
The correct answer is D. Nuclei
During this process, multiple nuclei are created and they all exist at the same time until the cytoplasm separates and starts forming new cells, which is when the nuclei enter these new cells and separate, forming thus new cells.
A hydra removes undigested food by pulling the food out with it's tentacles.
I'm pretty sure the answer is C, there are 4 nitrogenous bases involved.
<span>1) Adenine
2) Guanine
3) Thymine
4) Cytosine</span>
