The plants depend on animals and animals depend on plants.
Plants depend on animals for nutrients, pollination and seed dispersal. Animals are totally dependent on plants. First of all plants produce oxygen which is vital for life on earth. Then, for many animals plants are their basic food, or if plants don’t make up 100 % of their diet, plants are nevertheless essential in their food supply.
Plants require animals to spread their seeds around the area, also known as seed dispersal. They also use the help of other animals for pollination. Bees can be used as a great example for pollination and so as butterflies, flies, etc. Some plants have seeds with barbs that stick to the animals fur. Some just simply stick to the animals paws and/or fur until dropping off to another place. Other seeds are consumed and then composed. Here's an example. A deer eats an apple. Everyone knows that apples have seeds, hence, the deer consumes the seeds. The deer will then compose the digested food along with the seeds. Now, the apple's seeds have settled in another place and will start its growth. Animals also depend on the plants. Plants are a source of food for many herbivores and omnivores. Plants also have a high nutrition, giving animals the nourishment needed. They also produce oxygen and take in carbon dioxide. This is necessary for earth and its wildlife on it.
