Oxygen is the answer for this question.
Because the land masses are getting closer not further apart
Answer:
The process of photosynthesis and cellular respiration are essential as they provide the organism with energy which is required to carry out functions of a cell. Both these processes share differences and similarities in their own unique ways.
The process of photosynthesis is opposite to the process of cellular respiration. This means that the reactants of one reaction are the products of the other reaction and vice versa.
Photosynthesis can be described as a process in which plants make sugar and oxygen from carbon dioxide and water by using light energy from the sun.
Cellular respiration can be described as a process in which carbon dioxide and water are made from oxygen and glucose. Energy in the form of ATP is released during this process.
Both these process are necessary for the survival of organisms on Earth. Without photosynthesis, there would not be enough oxygen for humans to respire and the plants would not be able to make food.
Without respiration, the cells of an organisms body wouldn't get the energy to carry out it tasks.
