Question 1
The organic material found in topsoil is called (humus/peat/compost).Question 2
What are the levels of microbial associations in the environment? How do they relate to an ecosystem?Answer 1
humusAnswer 2
Microorganisms are associated with each other at many levels in the environment. Individual growing and reproducing organisms that are all of one species are referred to as a population. Populations of microorganisms performing metabolically related processes are known as guilds. Guilds constitute communities. Guilds and populations within a community typically reside in their own habitat. Together, the organisms, environment, and relationship between the two constitute the ecosystem.