Arrange the groups of organisms in ascending order of their mass in the total mass of living matter

Arrange the groups of organisms in ascending order of their mass in the total mass of living matter. a) Large animals. b) Microscopic organisms. c) Large plants.

When arranging groups of organisms, their external factor is taken into account. In the first place are microscopic organisms, answer B, then large plants, answer C, and in third place are large animals, answer A. Animals (1400000 species), plants (260 thousand species) , mushrooms (more than 100 thousand species), bacteria (30 thousand species). A significant number, especially bacteria, remain unknown.