The ecosystem that consists of a producer and consumer is a decomposer
Explanation:
The ecosystem comprises a number of producers, ad decomposers. The producers belong to the bottom of the food chain and they are divided into primary and secondary such as plants and herbivorous animals like grass and deer.
The secondary environment consists of consumers that are also divided into primary and secondary that is wolves and Man.
The decomposers are the last in the food chain that acts of dead and decaying reasons and converts the nutrient energy into the soil that is take up again by plants.
The milky halo is an outer region of the milky way and is an extended spherical component of the galaxy that forms beyond the visible components and is found in the stellar halo, the corona, and has dark matter.
The formation of the stellar halos occurs due to increased gravity and the presence of the primordial black holes. This halo consists of the vast majority of the mass of the galaxy and includes the globular clusters.
