What is the importance of having a controlled experiment.

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

2. sketch the inside of the bean nodule, and describe or label what you observed with the hand lens.

Which statement best describes a typical difference that could be found between the “analysis” and “conclusion” sections of a lab report?