The first one is natural, second is oil, this one is oil, fourth one is natural and the last one is coal.
The Answer is All of the above
Probably the sun needed water needed the roots whether it grows underground or over and the color
Answer:
<em>Test group is a group that is modified or </em><em>changed by the researcher </em><em>and is then compared to the </em><em>experimental group while carrying out an experiment. </em>
Explanation:
While observing the data of the test group, it has to be compared with the control group to see if there is any effect of the treatment on the test or not. The control can be positive or negative or both to which the test group is compared.
