Answer:
I beleive your answer is C Homeostasis
Explanation:
Answer:Renewable resources include biomass energy (such as ethanol), hydro-power, geothermal power, wind energy, and solar energy. Biomass refers to organic material from plants or animals. This includes wood, sewage, and ethanol (which comes from corn or other plants).
So a natural resource would be trees because wood comes from trees.
Hope this helps
plz mark brainliest
The hair-like structures are called cilia. Cilia are also found in other microorganisms.