D Would Be The Best Choice
Archaebacteria is the answer I'm pretty sure you are looking for. anybody correct me if I'm wrong
Answer:
i think d
Explanation:
<u><em>hoped i helped</em></u>
Answer:
hope you like it
Explanation:
Examples of natural systems include: real number system, solar system, and planetary atmosphere circulation systems.
Natural physical systems include the solar system and an animal's digestive system. Human-made physical systems include mechanical systems, optical systems, electrical systems, and combinations of these. The names of these systems come from the type of energy they use.