Final answer:
The biosphere includes all the living things and their environments on Earth, incorporating both biotic and abiotic factors. (Option A)
Step-by-step explanation:
The biosphere is the part of Earth where all life exists, including the air, land, surface rocks, and water. It is made up of all the living things (biotic factors) and their environments (abiotic factors) encompassing the diversity and interaction of life forms with their surroundings.
Biotic factors consist of all the living components of the environment, like plants, animals, and microorganisms, while abiotic factors refer to non-living, physical components such as air, water, soil, and temperature. The interplay between these factors is crucial for the nurturing and sustenance of biodiversity on our planet. The biosphere includes various ecosystems and biomes and is the broadest level of biological organization — an interconnected system that encompasses all areas that contain life, from the deepest oceans to the highest point in the atmosphere.
Hence, the correct answer ?' is A) All the living things and their environments on Earth. It encompasses ecosystems and biomes and represents the broadest level of biological organization where life exists on the planet.