(1) A student observed slides of onion cells using a microscope. Figure 2 shows two of the slides the student observed. Figure 2 Slide A Slide B The cells on the slides are not clear to see. (c) Describe how the student should adjust the microscope to see the cells on Slide A more clearly (1) (d) Describe how the student should adjust the microscope to see the cells on Slide B more clearly.​

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

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.

Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.