HORTICULTURE

Detailed explanation-1: -Autotrophs are able to manufacture energy from the sun, but heterotrophs must rely on other organisms for energy.

Detailed explanation-2: -An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals. Because autotrophs produce their own food, they are sometimes called producers.

Detailed explanation-3: -A producer is an organism that uses an outside energy source like the Sun to make energy-rich molecules. Most producers contain chlorophyll, a chemical that is required for photosynthesis.

Detailed explanation-4: -Food Chains Plants make their own food through a process called photosynthesis. Using the energy from the sun, water and carbon dioxide from the atmosphere and nutrients, they chemically make their own food. Since they make or produce their own food they are called producers.