In the latter case the resistance is caused by dissipation of mechanical energy when the configuration or the direction of flow is sharply changed, by the formation of vortices and secondary flows as a result of the flow breaking away, by the centrifugal forces, etc.
Why do animals depend on plants. Plants give animals the food and shelter they need. Herbivores, which are plant eating animals, rely on plants to provide them with a regular source of food. They also provide shelter to may animals, both large and small.
Animals in a desert will have large ears, like the elephant, to disperse body heat. The amounts of sunlight and rainfall are also limiting factors for both plants and animals. Both affect plant growth. Which plants grow in a biome determines which animals inhabit that biome.For example, grey squirrels, which feed on nuts, are found in woodlands, but not in deserts where nuts aren't found.Competition results when two different species try to fill the same niche.oth affect plant growth. Which plants grow in a biome determines which animals inhabit that biome. For example, grey squirrels, which feed on nuts, are found in woodlands, but not in deserts where nuts aren't found. Competition results when two different species try to fill the same niche.