In Science / Elementary School | 2024-09-02

16. The following materials undergo a physical change. Which of thechanges in matter has a bad effect on the environment?A. freezing of meat to preserve it over a long period of timeB. using spray paint in tin cans to cover the rustC. cutting of the fabric to be made into clothesD. evaporation of rainwater17. The following materials undergo chemical change. Which ofthese changes in matter has a good effect on the environment?A burning of plasticB. composting of biodegradable wastesC. exposing alcohol to direct heat or fireD. combustion of gasoline in the car's engine18. Cutting down trees has its advantages and uses to the peopleWhich of the following is a bad effect of this activity?A Cutting of trees may result in house construction.B. Cutting of trees may result in paper productionC. Cutting of trees may result in furniture making▷ Cutting of trees may result in flooding19. The following activities can be done to pieces of wood, which of thesecan cause harm to the environment?A burning pieces of wood to be made as charcoalB shaping pieces of wood to be made into a chairC using pieces of wood to be made as furnitureD. forming pieces of wood as a junior fence20 Your father celebrated his birthday yesterday, there were many empty plasticbottles of soft drinks left. What is the best way you can do with these emptyplastic bottles to protect the environment?A throw the empty plastic bottles into the seashoreB make the empty plastic bottles as flower vasesC dump the empty plastic bottles in the landfillD burn the empty plastic bottlespatulong lang po...salamat ​

Asked by aguilargab2224