Answer:
the answer is B
Explanation:
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A wave of immigration inspired nativist politicians to pass laws forcing immigrants to pass a literacy test, and to create a QUOTA SYSTEM.
In other words they were completely against immigrants.
<span>The civil war affected many people. It affected slave owners, they were worried they were gonna loose their slaves. It affected the south, They seperate from the union and they made thier own country called the Confederate States of America.</span>
Making food and watching the children.
If a student wants to study the effect of sunlight on plant growth. In his experiment, 12 plants receive normal amounts of sunlight, but half of them are kept under bright sun lamps all night long. The control group is: the amount of light the plant receives.
<h3>What is control group?</h3>
A control group is a type of experiment carried out using two variables based on this control group can be defined as the process in which experiment is carried on two different variables such as dependent variables and independent variables in which one of the variables is not experimented or tested.
Based on the given scenario if after 6 weeks, the plants heights measured which inturn means that the control group is the amount of light the plant receives.
Therefore if 12 plants receive normal amounts of sunlight, but half of them are kept under bright sun lamps all night long. The control group is: the amount of light the plant receives.
Learn more about control group here:brainly.com/question/24708013
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