1) predict how atmospheric carbon dioxide levels might change if more trees were planted on earth. 2) compare visible and infrared radiation. 3) assess whether your home is heated by conduction or convection. 4) sequence how the unequal heating of earth’s surface leads to the formation of wind. 5) evaluate whether a sea breeze could occur at night.

1. Although there are many ways to add carbon dioxide to the air, the only way to remove atmospheric carbon dioxide is planting trees. Plants produce foods by a process called photosynthesis by using atmospheric carbon dioxide. If we plant more trees, then the absorbtion of the atmospheric carbon dioxide will increase. Then, atmospheric carbon dioxide level might be reduced.

2. Visible light has a high frequency than infrared radiation and the wave length is between 400 - 700 nm while infrared has wavelength between 700 nm to 1 mm. The visible light can be seen by the naked eye but Infrared radiation cannot. Visible light mainly used for visualization and communication. But Infrared radiation has many uses as medical treatments, night vision, communication, satellite technology so on.

3. Conduction is a way of heat transfers through the solid materials and heat transferring by air is called convention. By absorbing heat energy from the sun, solid materials like roof, walls and windows of our home is heated. So home is heated by conduction.

4. When Earth is unequally heated by the sun's radiation, a heat difference is generated. Then the heated air which is less dense goes up and the cold air which is dense comes down layer of atmosphere and fill the air layer which is vacant by goes up. Then this cause to flow the air and hence the wind is formed.

5. Sea breeze is a situation that wind flows towards the land from the sea. The reason for this is the heat difference between land and sea water. During the day, land is heated than sea. Hence heated air goes up and cold air from the sea comes to the land. Then sea breeze is generated. During night, land is cooler than sea. Hence wind flows towards the sea from land this is called land breeze. Hence sea breeze cannot occur at night.

True statement gravity force is more on bigger mass, less on smaller mass.all mass fall on planet with same acceleration and speeds