Answer:
That is administered and controlled
Step-by-step explanation:
A variable is the condition or a product that may vary without the influence of any investigator. Such variables can be found abundantly in our daily lives, ranging from air to sunlight. Controlling such variables ensures the limitation of their influence on the outcome of an experiment. In connection to this experiment, the variables that are controlled are the mineral content in the water, the amount of bacteria food, the amount of light and the the constant temperature of 20 degrees C.
If not administered or these variables controlled, the experiment would not clearly explain the impact of caffeine on the heart beat of the water fleas as other variables may have influenced it. Thus variables are controlled to study the singular impact of any agent or effect.
Q: this picnic table was made from fallen trees in a local forest. is this picnic table a biotic or abiotic factor? explain your answer.
A: the answer would be biotic because the term biotic means that something is living or had lived before. as you can see, the table was made by fallen trees in the local forest. that means it lived before the tree was fallen and carved into a picnic table.
hope this helps! ❤ from peachimin
People behave the way they do because of situation as well as genetics.
<h3>Why people behave the way they do?</h3>
People behave as they do in response to the way they are treated by other people as well as in response to situation. In their behaviour, they have also a genetic factor that influence their behaviour.
So we can conclude that people behave the way they do because of situation as well as genetics.
Learn more about behaviour here: brainly.com/question/1741474
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Answer:
According to the U.S. Energy Information Administration, most of the nation's electricity is generated by coal, natural gas, and nuclear energy. Electricity is also produced from renewable sources such as hydropower, biomass, wind, geothermal, and solar power.
