D. Things that are kept constant.
Controls are used in an experiment where some variable is being changed. By only changing one thing and keeping the others constant they can make sure that any change in the results is caused by the variable and not the constant, since the constant didn’t change.
Answer:They get there energy by autotrophs
Explanation:
They get there energy by autotrophs
Answer:
One theory had been that hippos were related to pigs. Yet mounting evidence suggested they are closer to whales. A new study concludes that a four-footed semi-aquatic mammal that thrived for some 40 million years was a common ancestor to both whales and hippos.
Explanation:
Answer:
An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.
Hope this helps!
Answer:
<em>The above statement is false. </em>
Explanation:
Domestic use of water refers to a city using certain amounts of water. It is not only limited to the water use in the household but also refers to the water usage of different places like restaurants, cafes, companies, malls of a city. Hence, we cannot say that domestic use of water only refers to the water being used in private households. So, the above statement will be considered to be false.
