Answer: corals, crabs, oysters and urchins
Explanation:
Answer:
Eukaryotic organisms have no nucleus and prefer aquatic or moist environments. Interestingly, some are parasites, and some do not have mitochondria.
Explanation:
You may need to add some more sentences to better link these two together.
Rough and smooth ER is the two kinds
Alternating sugar and phosphate molecules form the sides or "backbone" of the DNA molecule
Hope this helps!
<span>Unicellular organisms have all the necessary cell organelles and a well-defined nucleus, therefore fulfilling the characteristics of eukaryotes.</span>