If you leave an apple slice on the table for a couple of hours, which is likely to be observed?

If you cover a lighted candle with a glass jar, what will likely occur?

Which will occur in the absence of oxygen?

Incineration is the destruction of waste materials through burning. Which is not aneffect of incineration?

These are practices that we can do to prevent harmful effects of change in our environment. Which one is NOT?

People in a certain community throw garbage in the river. What do you think will happen a day after tomorrow?

Plastic products are durable, low cost, and easy to manufacture. What do you think happens if it is NOT disposed properly?

Which of the following activities contribute to polluting the environment?