The best sentence that describe an independent variable would be : The factor in an experiment that could be deliberately changed.
The scientist use deliberately change this factor to find out which factor actually caused the occurrence in the experiment.
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Answer:
Earth takes in thermal energy from the Sun in a process called THERMAL RADIATION.
Sunlight strikes Earth's surface at different angles. This angle is called the angle of INCIDENCE.
Explanation:
It is thermal radiation because thermal radiation refer to process where electromagnetic waves are emitted from a body or matter whose temperature is higher than zero. The Earth take in thermal energy from the sun as a result of thermal radiation.
Angle of incidence is the angle between a ray of light and the surface of it's perpendicular direction. The sunlight strike the Earth surface at an angle called angle of incidence.
You multiply grams of carbohydrate in the food by 4 calories per gram. Same with protein. And multiply grams of fat in the food by 9 calories per gram. And finally, add the energy from carbohydrate, protein, and fat.
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Sports drinks are the best choice.