Question

Which of the following statements is true?

1. The buildup of carbon dioxide in the atmosphere causes the greenhouse effect.
2. An increase in pressure causes an increase in reaction rate.
3. The formation of gas bubbles is an indication of a chemical change.
4. all of the above

Answer 1

Answer:

4. all of the above

Explanation:

Statements 1, 2 and 3 all are true.