Bacteria and fungi play important roles in the economy:

1. Agriculture: bacteria and fungi are involved in the production of food, decomposition of organic matter, and nitrogen fixation in soil.
2. Biotechnology: bacteria and fungi are used in the production of fermented foods, such as yogurt and cheese, as well as in the production of biodegradable plastics, biofuels, and enzymes for industrial processes.
3. Medical industry: bacteria and fungi are used in the production of antibiotics, vaccines, and other pharmaceutical products.
4. Environmental remediation: bacteria and fungi are used in the cleanup of oil spills and other environmental hazards.
5. Bioremediation: bacteria and fungi are used to break down and detoxify hazardous waste.

Overall, bacteria and fungi are crucial components of many economic sectors and play important roles in maintaining the balance of ecosystems.