You can't see them without a microscope, nor can you smell or taste them individually.
A refrigerator, or a plastic container.
Answer:
1. Micro-organism
Explanation:
Micro organism are disease causing agents,which cannot be seen with the human naked eyes. The use of of magnification lens or microscope goes a long way in making them visible.
People living within the Australia's major city are exposed to a lot of disease causing organism than those who stays outside the city.
A city is been define as a collection of heterogeneous set of people,and a key criteria is it's population.
Daily business activities within the city surpasses that which happens outside the city.The handling of door knobs,elevators buttons ,stair rails and other common objects which can be touched by humans,there by making the transmission and inhabitation of fungi,viruses and bacterial infection more likely within the major cities.
A. hostility hope you have a good day and i hope this helps
High quality Sleep
Good body composition
Mental Clarity as an active lifestyle is one of the best mood inhancers there is
