Question

what is known as \the variety of all life forms on earth - the different plants, animals and micro - organisms and the ecosystems of which they are a part\?
habitats
biodiversity
biomes

Explanation:

The question asks for the term defining the variety of life forms (plants, animals, micro - organisms) and their ecosystems. "Biodiversity" (note: there's a typo as "Blodiversity" but it's the intended term) is the correct term. Habitats are where organisms live, and biomes are large ecological areas, so they don't match the definition.

Answer:

B. Blodiversity (Note: Correct term is Biodiversity, but based on the option given, this is the intended answer)