Final answer:
Bacteria are the most abundant and diverse organisms on Earth, making the statement true.
Step-by-step explanation:
True. Bacteria are indeed the most abundant and diverse organisms on Earth. They exist in almost every environment, including the ocean, soil, and even within the intestines of animals. The total number of bacteria is estimated to be 5 x 10^30, or millions of trillions. Bacteria are also essential for many important processes and functions in our everyday lives.