A) <u>Mutation</u> is the original source of variations for plants and other organisms which develops differences among their respective species
Explanation:
Genetic variation leads to the natural differences between each individual and among individuals of a species. The main cause for this variation is due to alleles that cause variations in the composition of genes or the DNA sequences.
A mutation is a genetic variation which leads to the creation of a new allele in a species population. Each variation in the DNA sequence leads to an allele formation and each allele leads to a difference in character or trait between individuals since they are the alternate version of the original genes.
Although genetic variations could be brought about by crossing over, random fertilization, or independent assortment; mutation is the original source because it provides the basic raw material for all the evolutionary changes.
In geology, a graded bed is one characterized by a systematic change in grain or clast size from one side of the bed to the other. Most commonly this takes the form of normal grading, with coarser sediments at the base, which grade upward into progressively finer onesI just learned about this in our rocks and minerals unit for science,
It is important to make the client understand that while alcohol might not be the cause of their problems or all of their problems it does affect the process of their decision making depending on the situation and how they feel towards different situations. A short-term goal would be to go a week without drinking alcohol and to note their changes in mood, behavior towards others and different challenges that they face. Another option is to set a "challenge" to see how long the client can go without the consumption of alcohol, the longer they go without the bigger the changes they will see in their day to day life.
The answer is B . two atoms exchange electrons and become ions
