jordanrini
31.08.2020 •
Biology
ASAP! What is the control variable?
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Ответ:
A control variable is the element that is constant. it does not change throughout the experiment as it helps researchers understand the effect of what's being tested by comparing it to the control variable.
Ответ:
he forgot to adjust the brightness and the curtain. Slowly move the knob so that the objective goes up. Continue until the image is okay
Pretty clear focus. Then use the knob, if available, for a clearer picture. If you are on a microscope with a moving specimen carrier, turn the coarse knob so that the table carrying the specimen moves down or away from the objective. This is exactly how to use a microscope focus regulator.
Explanation: