Answer:
Four conditions are required for evolution to occur: reproduction, heredity, variation in fitness or organisms, variation in individuals among the members of the observed population.
The answer is C
because Lithium and sodium belong to the same column.
Answer:
The meaningful differences between organisms in a population are genetic. Variations in the genome of members of a population arise through mutation. Occasionally, a mutation occurs in an individual that is beneficial, that helps that organism be better able to survive and repoduce in its current environment.
