Isotopes are different versions of an element or different versions of a certain kind of atom. In order for an atom to be an isotope, it must have the same number of protons because the protons determine what kind of element it is. Also, there must be a different number of neutrons in the core the atom.
This situation is best explained by the process of natural selection.
A single-celled eukaryotic organism that is neither a consumer nor a decomposer would most likely be classified in Kingdom Protista.
Kingdom protista:
- The classification of a third kingdom, separate from animals and plants was first proposed by John Hogg in 1860 as the kingdom Protista; in 1866 Ernst Haeckel also proposed a third kingdom Protista as "the kingdom of primitive forms".
- Originally these also included prokaryotes, but with time these were removed to a fourth kingdom Monera.
- In the popular five-kingdom scheme proposed by Robert Whittaker in 1969, Protista was defined as eukaryotic "organisms which are unicellular or unicellular-colonial and which form no tissues", and the fifth kingdom Fungi was established.
- In the five-kingdom system of Lynn Margulis, the term protist is reserved for microscopic organisms, while the more inclusive kingdom Protoctista (or protoctists) included certain large multicellular eukaryotes, such as kelp, red algae, and slime molds.
- Some use the term protist interchangeably with Margulis's protoctist, to encompass both single-celled and multicellular eukaryotes, including those that form specialized tissues but do not fit into any of the other traditional kingdoms.
To learn more about Protista: brainly.com/question/10697472
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troposphere, troposphere is where all the weather comes from
