Answer:
cells, tissues, organs, and systems
Only eukaryotes use mitosis, these cells have a single nucleus and membrane-bound organelles.
When you breath in you breath in oxygen, which comes from plants, when you breath out, you breath out carbon dioxide, which is what plants breath.
What are your problems in bio?
<span>A. Natural selection
Able to find more food means more likely to survive - survival of the fittest i.e. natural selection.</span>
