Asked by shakayla

an experiment where only one variable is changed and all others are kept constant down
Answered by shakayla
i don't get it
Answered by Ms. Sue
Did you read the title of the article that Bobpursley posted?
Answered by shakayla
yes and i clicked on it i do not see it
Answered by Ms. Sue
From the above website:

"Biology-Mr.Willets

"Single Variable Experiment

"A single variable experiment is one in which the experimenter (you) changes only one factor (the single variable) in order to see its effect on the experimental subjects. To do this, there must be two groups of subjects. These two groups must be as similar as possible. It is easier to get two groups to be similar if large numbers of subjects are used (the more, the better, within limits of space etc.) Large groups are also helpful because if there is one unusual member of the group, it will not affect the average all that much."

Answered by shakayla
what are devices that increase the five senses' abilities to obtain information
Answered by Ms. Sue
eye glasses
hearing aids
magnifying glasses
telescopes
microscopes
Answered by shakayla
no i think it starts with an i
Answered by Dr Russ
instruments?
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