Answer:
Gravity?
Explanation:
Or it could be a non contact force.
Answer:
These are things that won't be going away. Natural gasses and fossil fuels will likely run out someday or become much harder to find. When you use these sources of energy, they won't be going away and therefore will be sustainable because we can always continue using them.
Does that make sense?
Explanation:
Answer:
Both have dinosaurs as ancestors (basically both are related to dinosaurs)
Explanation:
Answer:
a natural health food product prepared by yeast fermentation of medicinal plants,
Explanation: