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.
Then, animals come along and eat the plants and absorb their energy. They use the energy obtained from the plants to produce their own energy and convert it into water and carbon dioxide. Plants use the carbon dioxide and water, and the cycle begins again. In order to obtain energy, animals do not always have to eat plants. They can also get energy from eating other animals that eat plants.There are many different processes that go on in plants and animals that require energy. Synthetic work involves things like the production of DNA, and it requires energy to occur.