Be-4 for a powerboat to be operated in compliance with the law, in addition to registration number what else is required?

What else that is needed for a powerboat to be operated in compliance with the law aside from the registration number is the display of valid state registration decal while boating, although, each State has different specifications on what powerboats to be registered.

The word biology is derived from the greek words /bios/ meaning /life/ and /logos/ meaning /study/ and is defined as the science of life and living organisms. An organism is a living entity consisting of one cell e.g. bacteria, or several cells e.g. animals, plants, and fungi.

Explanation: Biology is the natural science that studies life and living organisms, including their physical structure, chemical processes, molecular interactions, physiological mechanisms, development, and evolution. Despite the complexity of science, certain unifying concepts consolidate it into a single, coherent field.