Animals eat things. And sometimes, they even drink things. That's about it. They, like every other living heterotroph, get their energy through the food they consume, whether it be plants or other animals.
Animals obtain energy by what they eat. It is all a big cycle, the sun(main source of energy) gives energy to the grass which gives energy to the cow, though in smaller amounts.
help them to breath oxygenIt gives animals ,energy needed. It oxidizes food and release energy
A rechargeable battery is a device that can store large amounts of electricity when it is unplugged. These batteries store energy chemically and convert it to electrical energy when needed.
Because the energy released by nuclear fission is extremely great compared with the energy released by coal burning.
Deserts receive little rainfall and, therefore, only limited amounts of grass grow which is needed for grazing animals.
Glycogen, which occurs in large amounts in the liver.
All animals, yourself included, consume food to gain energy. Unlike plants, animals can't use sunlight to produce energy, however, by eating plants or other animals, an animal can convert the energy that organism had for its own use.
If one inspects the reactions needed to burn lipids for energy, it becomes obvious that tremendous amounts of oxygen are needed and humans do not have the necessary lung capacity for this.
Deserts receive little rainfall and, therefore, only limited amounts of grass grow which is needed for grazing animals.
Fat is the body fuel that can be stored in unlimited amounts. It is stored in adipose tissue throughout the body and can provide energy when needed.
Animals and humans eat food to stay alive. Metabolic processes break down the food (plants and animals) to obtain energy, and the materials needed to build and repair the body.
sun makes bacteria grow, bacteria and sun is needed to grow plants plants are needed to feed plant eating animals carnivors eats the plant eating animals. then scaventures eats the carnivors.