They have served their purpose and are no longer needed by the plant.
To answer this question, let us define first what is a theory. Well, a theory is an idea or hypothesis that explained something. From the given choices, the answer is the letter "C" which is "Rocks break down over time". This is the answer since this is the only the statement that can be proven.
I just answered your other post with these questions. (:
Erythrocytes, or red blood cells, transport oxygen to various parts of the body. A low RBC count means that the person will not get enough oxygen to different parts of the body. Therefore, symptoms of anemia include lethargy, feeling of fatigue and dizziness.
False.
Chromosomes carry genetic codes, not proteins :)
