To reproduce (asexually). Most unicellular organisms only live for mere hours. The best bet for the species to survive and thrive as a whole is for them to reproduce, or replicate.
Answer:
Transportation of substances in cells, where they travel against the concentration gradient. However, it requires ATP to do so.
Explanation:
Explanation:
protect cells and organelles from the surrounding environment
Answer:
it makes us addict to fame and people would do anything to be higher up in the social groups