<span>Unicellular organisms have all the necessary cell organelles and a well-defined nucleus, therefore fulfilling the characteristics of eukaryotes.</span>
All the organisms are divided into prokaryotes and eukaryotes. Prokaryotes contain the organisms that are single celled and do not have membrane-bound nucleus and other membrane-bound organelle.
Eukaryotes can be single cellular like amoeba or multicellular like humans but all the eukaryotes contain a membrane-bound nucleus in which their genetic material is packed and enclosed and other membrane-bound organelles are also present.
As amoeba have a membrane-bound nucleus which contains its genetic material, therefore, they are considered in eukaryotes. So eukaryotes contain those organisms which have membrane-bound organelle like nucleus and they can be unicellular or multicellular.
Core is hotter than the mantle and made of iron which convection currents move the plates is hot stuff up cold sinks, and its hotness makes the mushrooms reproduc