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trapecia [35]
3 years ago
8

When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the _______ vari

able.
A. environmental
B. observational
C. experimental
D. control
Biology
1 answer:
Harrizon [31]3 years ago
7 0
When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the C. experimental. Experimental variables are the things you are studying in the experiment and it is the only variable you can change.
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Answer: The answer is 2200 calories per day for Zondra and 3000 per day for Austin

Explanation:

The options are;

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Calories provide energy which we use to perform daily activities. The calories derived from food allow us take part in important activities and leisure. Calorie needs are often higher during teenage years because it is the time of rapid growth.

Austin, is her 16 year old son. The recommended calorie needs for adolescent males between the ages of 16- 18 are; 2,400 calories for non active adolescents, 2,800 calories for moderately active adolescents and 3200 calories for active adolescents.

Zondra is a 14 year old female adolescents. The recommended needs for adolescent females between the ages of 14-18 are; 1,800 calories for non active adolescent females, 2,000 calories for moderately active and 2,400 calories for active adolescent females.

Option B, 2200 calories per day for Zondra and 3000 per day for Austin  fall within the range

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