2. Which of the following is true about matter? a. Matter can only change states once or twice.
b. Water is the only kind of liquid matter that can become a solid.
c. Matter cannot be created or destroyed.
d. When water changes from a solid to a liquid, its total amount changes.

the answer is D

Explanation:

when water is frozen it becomes solid.. when it melts it becomes twice much water than before

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.