Which of the following is an example of a transformation of chemical energy into electrical energy? •An oil lighting up a room
•A car battery making headlights shine
•Sunlight providing power to a solar calculator
•A blowtorch welding two pieces of metal together. ​

Pretty sure it's the 2nd or 3rd one

a car battery making headlight shine

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.