Photosynthesis is an example of a. an exothermic reaction.
b. an endothermic reaction.
c. a reaction that gives off heat.
d. a reaction that emits energy.

Endothermic

Explanation:

Light is absorbed to synthesize glucose (well really G3P) from CO2 and sunlight.

Before World War II, most Americans had never eaten corn-fed beef. Raised on pasture, cattle reared before the 1950s usually took two or three years to be ready for the slaughterhouse. Steers were fed grain only occasionally and in small quantities, and farmers tended to use corn as a supplement—not a staple—of their livestock’s diets.

Explanation: