A student would like to determine how heating a liquid changes its volume. The student hypothesizes that the liquid will increase in volume. The following list shows the steps taken by the student in order to test the hypothesis.
Select the liquid to test.
Place the liquid in a sealed container.
Use a Bunsen burner to heat the liquid by 10°C.
Measure the volume of the liquid.
Record the results.
What is wrong with how the student conducted the investigation?
A.
The volume of the liquid should be measured before it is heated.
B.
The student should have increased the temperature of the liquid by more than 10ºC.
C.
The hypothesis was not valid because it is impossible for liquids to change in volume.
D.
The length of time it took for the liquid to be heated should be measured.

The volume of the liquid should be measured before it is heated.  Because During an experiment to test how a variable changes a substance, it is important to first observe and record the characteristics of the substance before the variable is introduced. In this case, the variable is heat energy.  

Explanation:

Forgot to measure the volume in the beginning so the student could tell the difference

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.

trachea, alveoli, lung capillaries, arteries