The energy that's given to the body by food isa. measured in units called calories. b. a nutrient that's essential for growth and development. c. best obtained by eating high protein. d. excreted by the body if not used.

a. Measured in units called calories.

Explanation:

The energy that is given to the body by food is measured in calories, which is a unit that measures the energy that is present in food, precisely in the joins between molecules and that can settle into our body as weight or burnt while doing physical activities.

his week a heat wave will be hitting, and most of the country will be experiencing temperatures above average for july. due to humidity, the temperature outside can feel even warmer than it actually is. this adjusted temperature, often referred to as the “feels like” temperature is called the heat index. the chart shows the heat index, which is calculated based on temperature and relative humidity. use this chart to answer the following questions.  

this is really easy just look up what these words mean