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Step2247 [10]
2 years ago
13

Scientists often test their hypotheses with controlled experiments. which of these is a rule for conducting a controlled experim

ent?
a. change at least two variables at a time
b. keep all variables constant
c. change as many variables as possible
d. change only one variable at a time
Biology
1 answer:
Mumz [18]2 years ago
8 0

Changing only one variable at a time is a  rule for conducting a controlled

experiment.

Controlled experiment involves the use of dependent and independent

variables . Changes in the independent variable brings about a

corresponding change in the dependent variable which is then recorded.

It is however important to note that changing more than only one variable at

a time won't accurately determine if the changes in the results were as a

result of one cause. This is why only one variable has to be changed at a

time.

Read more about Hypotheses here brainly.com/question/12416923

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weeeeeb [17]

Answer: D

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6 0
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Basalt is more dense than granite. True False
Irina-Kira [14]

Answer:

True

Explanation:

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5 0
4 years ago
Where are the youngest rocks in the Earth’s crust found? near the boundary between ocean crust and continental crust along the c
morpeh [17]
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7 0
4 years ago
Read 2 more answers
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Answer:

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Explanation:

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Whole

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