Answer:
In my personal opinion, yes, this is a pretty typical behavior of human beings. I'd say it's naturalistic in a way.
Answer:
Option C. The number of oxygen atoms is the same before and after the reaction.
Explanation:
When hydrogen combine with oxygen, water is formed. According to law of conservation of matter, matter cannot be created nor destroyed during a chemical reaction. So according to this law, the amount of reactants is equal to the amount of product produced after a chemical reaction and the number of oxygen atoms is the same before and after the reaction.
Answer: neuron, collection of neurons, brain, nervous system.
Explanation:
C. esophagus. it does not secrete any enzymes. its just do peristalsis. which is a rhythmic contractions and relaxations of muscles to push food along the gut
