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 food chain of living things. Animals get their energy from food. Herbivores, like deer and hare, feed on plants. Carnivores, like lions and wolves, eat meat. Omnivores, which include pigs, bears, and humans, eat both plants and animals. In an ecosystem, all the organisms that depend on one another in order to eat form a food chain. Plants are at the bottom of this chain. They get their energy from the sun, which allows them to manufacture the substances they need for their development. Most animals depend directly or indirectly on plants.