Answer: scientific theory is an explanation of observations or events that is based on knowledge gained from many observations or events.
Each bone has a humerus. The ones that have these bones are humans, lions and birds
Answer:
Heterogeneous mixtures are substances not mixed together.
Explanation:
I hope that is right
When a human dies, his corpses gets decomposed by decomposing bacteria. What's produced by the decomposing bacteria is the "fertilizer" for plants.