What would happen if there were no plants?
When green plants make food, they give off oxygen. This is a gas that all animals must breathe in order to stay alive. Without plants, animals would have no oxygen to breathe and would die. People also depend on plants for food. Why are plants important? Plants are the backbone of life on Earth. They provide us with the air we breathe, the food we eat, and the materials we use for shelter and clothing.plants need larger quantities of nitrogen, phosphorus and potassium than any other plant nutrients. Known as the primary macronutrients, these big three headline the nutrients essential to all plant life.
Can humans live without plants?
Humans need other species to produce food Only some microorganisms and plants have a way to use energy from sunlight, water and carbon dioxide to make the basic molecules that provide that food. This process is called photosynthesis. Without these organisms, humans wouldn’t have food to eat. You see, plants make oxygen and put it into the air. People and animals use that oxygen to live. We make carbon dioxide and put it into the air (when we breathe out, or exhale). Plants use that to live.Plants grow, so they must eat. But what do plants eat? Plants eat the food they make. The reason plants are producers is not for the survival of people; they make their own food for their own survival.