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.
  Actually plants do use oxygen and produce carbon dioxide. Plants â¦ need oxygen and glucose to respire (get energy). The key difference between plants and animals is that plants get their glucose by sticking carbon dioxide molecules and water molecules together, producing glucose and oxygen.OWEVER, Plants generally produce a NET NEGATIVE amount of carbon dioxide. Animals br â¦ eathe in Oxygen, use this to burn stored energy and perform work within the body, and in the process bond the oxygen to carbon producing carbon dioxide which is exhaled.