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Pachacha [2.7K]
3 years ago
13

In a scientific experiment how many independent variables should be tested at the same time? A. none B. one C. two D. three or m

ore
Biology
2 answers:
choli [55]3 years ago
7 0
B. One

because an independent variable is something you change. So in a scientific experiment you only change one thing. If you happen to change more than one thing then the test becomes unfair therefore you should repeat and make sure that only one thing is changed this time.
vfiekz [6]3 years ago
5 0
B. one
You should only test one so you know that your results were only affected by one independent variable.
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3 years ago
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3 years ago
I will fan and medal !!!!!!!!!!!!!!
Sveta_85 [38]
All right.
Differences with the Historical Model:
1. That model shows the planet's orbits as perfect circles, not ellipses. 
<span>2. Aristotle believed in a geocentric (Earth centered) solar system, while it actually is heliocentric Sun centered). </span>
<span>3. That model didn't show all the planets we know today, such as Neptune, Uranus, etc. </span>
<span>4. A lot of that model was based on religious beliefs. 
</span>Differences with Modern Model:
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<span>2. Our model shows a heliocentric solar system. </span>
<span>3. Our model shows all the planets we know today. </span>
<span>4. Our model has nothing to do with religion. 
</span>Similarities Between Both Models:
1. They both are based on the same solar system. 
<span>2. They both show the inner planets, the Moon, the Sun, Jupiter, and Saturn. </span>
<span>3. The both were made by many observations of the sky.
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Which of the following happens to chromosomes during prophase?
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Chromosomes condense during prophase

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