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The two structures make up a single replicated chromosome is sister chromatids.The term 'sister chromatid<span>' only applies when the identical copies are closely associated with one another and held together by a centromere. </span>
A dominant trait overshadows other traits and is expressed.
It modifies and packages proteins and lipids made within the cell, and sends them out to where they are needed. The cell's endoplasmic reticulum (ER) generates biological raw materials, packaging them in membrane-enclosed bubbles called vesicles, for transport to the Golgi.
Answer: it happens from chemical reactions when compound like sulfur dioxide and nitrogen oxides are released into the air. Then all those substances that were released go into the atmosphere when they mix and react with the water, oxygen and other chemicals to form acid rain.
