When you straighten your arm or leg (as in a pushing movement), you EXTEND the arm or leg. When you bend your arm at the elbow or your leg at the knee, you FLEX the arm at the elbow and flex the leg at the knee.
Feeding - consuming food or items to statisfy hunger.
importance -
1) maintaining proper body(prevent muscles and organs from wasting away)
functioning
2) For brain development
3) to gain energy for activities
Answer: Double blind clinical trial
Explanation:
The situation that is seen here is double blind clinical trail in which neither the participant nor the practitioner knows who is receiving the treatment.
This is used to prevent biasing in the experiment which is caused due to demand characteristics or placebo effect.
Here, in this situation the dog handlers and the experimental observer both were blinded to identify the breath sample.
Protects internal organs
Supports the body
