How do plants and animals rely on each other to maintain the atmospheric oxygen and carbon dioxide content?

The carbon cycle and oxygen cycle is mainly maitained by the plants animals. ... In photosythesis, carbon dioxide is utilised from the atmosphere and oxygen is released from the water by the process of photolysis of water. In respiration carbon dioxide and water is released from the product of photosynthesis and/or glucose.

Nationalism has increased the tensions among nations in Europe. The main reason for this is that this resulted in intense competition among these nations. Each wanted to overpower one another. In French nationalism, what resulted to this nationalism is that, France and Germany became rivals in face for naval superiority. The answer is the last option.