The answer is stem cells, they consist of classes of cells
that are undifferentiated and are able to be classified them into types like
specialized cells. They consist of having two main sources that will help them
develop and mature, these main sources are called the embryonic stem cell and
the adult stem cell.
The correct answer is: post-industrial community (society).
Post-industrial community is the society in which service sector brings more wealth than the manufacturing sector of the economy. In this kind of society, knowledge is valuated and producing ideas is the main way to grow the economy of that society.
No; some mice may have developed lung cancer in less than 500 days of cigarette smoke exposure.
It wants you to explain why its a chemical change. Signs of chemical changes are formation of gas bubbles, cloudyness, change in color or odor.
