The definition of a churn is a device for making butter. An example of a churn is what the Amish use to make butter. verb. To churn is defined as to stir or shake milk or cream with intense movements in the process of making butter, to stir up and agitate, or to produce something at a rapid and regular rate. An example of to churn is for a boat to create waves while moving quickly through the water .
Quick Answer. Plants absorb energy from the sun and use photosynthesis to make sugars. Animals have mitochondria that use the sugars provided by plants to produce their own cellular energy. Plants that produce their own food, and food for other plants and animals using photosynthesis, are called autotrophs.
The sun emits energy to Earth in the form of heat and light, and the plants in an ecosytem absorb the sunlight to make glucose, a form of chemical energy. Eventually the plant â¦ is eaten, and whatever ate it also obtained the energy of sunlight from the plant.n an ecosystem the point of energy for the new energy is usually  at the base. Energy flows from the primary to the secondary and  finally to the tertiary sources.