AP BIOLOGY

Detailed explanation-1: -The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants.

Detailed explanation-2: -Through the photosynthesis process, producers, such as grass, absorb the Sun’s light energy to produce food (stored sugar and starches). Photosynthesis is how plants convert the Sun’s energy into their energy.

Detailed explanation-3: -As you probably know, the organisms at the base of the food chain are photosynthetic; plants on land and phytoplankton (algae) in the oceans. These organisms are called the producers, and they get their energy directly from sunlight and inorganic nutrients.