It gives and provides us w oxygen
The loss of photosynthetic organisms will eventually cause a problem for animals because photosynthetic organisms are autotrophs, the foundation of any energy pyramid and/or food chain, and when this foundation is gone there is a major loss of energy for all organisms that are consumers since 100% of the energy comes from producers.
I think the correct answer is nucleic acid. There four major classes of macromolecules and these are lipids, carbohydrates, proteins and nucleic acids. Among these nucleic acid would best fit the definition. Examples of nucleic acids are DNA and RNA.
its 100% A) diverging species no longer recognize one another as potential mates.
