What are some of the main ways to add energy to a reaction? plzzz help

What are the genotypic and phenotypic ratios

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line