When farmers rotate their crops, each field has a crop of clover or other leguminous plant every three or four years. These bacteria can use Nitrogen gas from the air to make Nitrates. Return to Index Competition Plants and animals compete with each other. This is a kind of race, if you win you survive, if you lose you die. Plants compete for physical space, for nutrients and water from the soil and for sunlight.
Animals compete for territory, for food, and for mates.
At the moment you will find grass, plantains, dandelions and clover growing on the fields. We have an effect on the fields because we trample all over them and get someone to mow them twice a week. If we stopped doing this, other plants like brambles would seed themselves and start to grow. Then there would be hawthorn bushes and oak saplings. The kinds of plants that live on the fields would change.