Humans have a nearly ubiquitous influence on physical environments throughout the world. Looking back through geologic history, which type of organism can claim a comparable impact on physical environments?

Question

Quizplus · Accepted Answer

Cyanobacteria, also known as blue-green algae, were responsible for the oxygenation of Earth's atmosphere through photosynthesis, dramatically altering the physical environment and paving the way for the evolution of more complex life forms.

Humans Have a Nearly Ubiquitous Influence on Physical Environments Throughout