Cells have methods for breaking down proteins and other molecules that are no longer needed. These can then be removed from the cell. Why is this waste removal necessary? A. Cells must remove waste in order to keep other cell processes functioning properly. B. The waste products are necessary for new cells to be made. C. Cells must remove waste because it is used to extract energy from food. D. The waste products are necessary for respiration and photosynthesis in other cells.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.