Answer:
Well if you mean species, it means the range or distribution of a species is the geographical area or habitat where the species live.
Explanation:
It would help if you could be more specific, But i hope it helps!!
Small Geographic Range
“A useful index fossil must be distinctive or easily recognizable, abundant, and have a wide geographic distribution and a short range through time.”
Answer:
The addition of an extra chromosome usually occurs spontaneously during conception. The cause of this is unknown and prevention is not possible. The most important risk factor for trisomy conditions is maternal age. Women in their late 30s and 40s have a higher chance of trisomy conditions occurring.
Answer:
Neutral.
Explanation:
When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons). The total electric charge of the atom is therefore zero and the atom is said to be neutral.