Answer:
An engine
Explanation:
The engine is used to keep the car running, much like how our muscles keep us walking and moving around
Answer:
Heredity is the pass of characteristics/physical features.
Explanation:
For example, you can inherit the same color hair as one of your parents.
You are inheriting a special trait that they have.
C. Phobias are irrational fears about something. They are "irrational" because a person may fear something that would not logically pose any real threat or harm, such as fearing small spaces (claustrophobia) like elevators because one might feel like they are suffocating, even though elevators obviously do not cause people to suffocate.
D) all of the above
All of these are barriers to physical activity
I took the quiz, the answer is: They must be obtained through diet.