Answer: d. double-blind
Explanation:
A double blind study can be define as the study in which both the researcher and participant do not know which participant is receiving a particular treatment. This method is useful as it prevents the bias in the results of the experiment.
The given situation is the example of double-blind study. Here, the participants as well as the researcher do not know which group of subject are receiving bacteria in the yogurt and which group is not receiving.
False .........................
Answer: 4, 5, 6
Explanation:
You can just look them up, Hope this helps! :)
Answer:
Internal: Heart, Lungs and Kidneys, Brain, Liver, Stomach, Intestines, Pancreas.
External: Skin, Ears, Eyes, Nose, Mouth ect.
Explanation:
External body parts are the ones that are on the outside of your body that are visible to people around you, and can also be seen by yourself. Skin is the biggest organ of your body.
Internal body parts are the are the parts that are not visible to because it is inside of you, and are mostly organs
1. Healthy and thick hair
2. Long nails
3. Healthy teeth and gums
4. Enough sleep
5. Body mass index is balanced
6. Social interaction
7. Healthy diet
Hope it helps :)
