| A | B |
|---|
| What is photosynthesis? | the process plants use to take carbon dioxide from the atmosphere and make energy |
| How does carbon dioxide hurt the Earth? | it helps increase the greenhouse effect which raises global temperatures |
| What is true about the amount of carbon in the world? | there is a fixed amount that is recycled during the carbon cycle |
| What is the main effect the carbon cycle has on the Earth? | Life exists because carbon can be cycled within the Earth and the atmosphere. |
| What gas do consumers release to the environment as they burn sugar for energy? | carbon dioxide |
| What is the motion of the Earth turning on its axis called? | rotation |
| Why are the tropics warm and sunny year round? | The tropics receive 12 hours of direct sunlight year round. |
| Describe the summer solstice. | It is the day of the year when there are more hours of daylight than darkness. |
| What is the motion of the Earth orbiting the Sun? | revolution |
| What is a year? | The time it takes for the Earth to orbit the Sun. |
