Astudent sets up an experiment with two groups of bacteria. one group is exposed to the normal amount of mercury found in the environment. the other group gets a larger dose. which term describes the normally treated group?

experimental group

control group

variable group

independent group

control group

Explanation:

The control group is the one which is used in an experimental set up as a benchmark for the comparison of the changes that occur in the experimental variable or dependent variable. It is the group which does not receive any experimental treatment. The use of a control group in an experiment increases the accuracy of the results of the experiment. It is the group which is treated normally without causing any change.

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.