My mom gets B12 shots. What are these for and do I need to be worried about B12 deficiency? Why do you get a shot and what can I eat instead?

Eristics do scientists use to distinguish between organisms in different kingdoms

How are cellular respiration and photosynthesis different? cellular respiration assists breathing; photosynthesis aids pigmentation. cellular respiration breaks down glucose; photosynthesis creates glucose. cellular respiration creates glucose; photosynthesis breaks down glucose. cellular respiration releases oxygen; photosynthesis releases carbon dioxide.

Cells tend to have a relatively small and uniform size. why aren’t cells larger?