<span>Observations of organisms include </span>descriptions of the size, number, and arrangement of parts of the organism.
Hope that helped!
Answer:
Biological species.
Explanation:
Various concept like morphology species concept, ecological species concept was introduced by the scientists to explain the biological species. The biological species concept is accepted today.
The biological species concept explains that the group of interbreeding population that has the ability to reproductively isolated from the other such group.
Thus, the correct answer is option (c).
The correct answer is differentiation.
Planetary differentiation can be defined as a process in which separation of different constituents of the planetary body takes place.They are separated based on their physical or chemical behavior, where the body divides into different layers: the less denser materials rise up to the surface and the more denser substance of the planet sinks.
Example: dwarf planets.
NACL is the correct answer
