Brainliest why do different substances produce electromagnetic waves when they are heated up or energized

Here is a quote from an npr news article: “on average, working-age adults were eating about 78 fewer calories per day in 2010, compared with five years earlier. the new report is based on data from the national health and nutrition examination survey, which collects details on eating habits and other health-related information from a nationally representative sample of about 10,000 people in the u.s.” which of the following is true about the numerical value 78? a. it is an anecdote. b. it is a parameter. c. it is a simulation. d. it is a statistic.

Do you want free brainliest & free 15 points? answer this correctly and you shall receive : ) the ideal body position for your legs after you've adjusted your seat is with your knee a. is fully tucked in when pressing the pedals b. is slightly crooked when pressing the pedals c. is fully extended when pressing the pedals d. is pressing directly on the pedals

Coal combustion produces which of the following waste products? i. tar ii. methane iii. electricity i only ii only i and ii ii and iii i, ii, and iii