Alisha thought about what she had learned in class. She wanted to explain the concept of global warming to her grandmother. Help Alisha give her grandmother a clear explanation by completing the following statements.(3 points)
3. Human activities like burning fossil fuels and deforestation cause concentrations of
in the atmosphere to increase. These chemicals act like a blanket,
. Examples of these chemicals are
. This causes a phenomenon called
, which means global temperatures are
. When this happens over a long period of time, it contributes to worldwide