By photosynthesis
The Sun.
the sun.
The essential variables that are needed for plants to produce food are sun light, water (H20), and carbon dioxide.
Because plants produce their food with the sun. And everything eats plants, in someway. (A tiger eats a zebra who eats grass who get their food because the sun shines).
No. Plants "make their own food" using sunlight. The sun is not alive so there is no food for the sun.
The essential variables that are needed for plants to produce food are sun light, water (H20), and carbon dioxide.
grass,plankton, and trees
Photosynthesis
Soil, and sun. This is simple stuff
The essential variables that are needed for plants to produce food are sun light, water (H20), and carbon dioxide.
plants get their energy and food through a process called photosynthesis. in other words, plants use sunlight to produce energy and food.
The sun is at the base of the food chain because it provides energy for photosynthesis, which plants use to produce food. Plants are then consumed by herbivores, which are subsequently consumed by carnivores, creating a flow of energy through the food chain. Without the sun's energy, the food chain would collapse.