Circle: true or false, for the first few divisions, cells remain undifferentiated. if false explain why

The right answer is True.

In cell biology, an undifferentiated cell is a stem cell capable of both generating specialized cells by cell differentiation and to maintain itself in the body by proliferation or asymmetric division.

During the first division of the stem cell, it remains undifferentiated, then, as the number of division increases, the cell chooses a differentiation pathway and becomes more and more differentiated and transforms into a specialized cell.

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.