A scientist investigated a type of a bacteria and a type of virus. She added a sample of each to separate dishes. The dishes contained food and other substances living organisms need. After several days, she examined each dish. Her observations are in the table below.
Dish with Bacteria Dish with Virus
Amount Many more bacteria are in the dish. The same number of viruses are in the dish.
Food The amount of food in the dish decreased. The amount of food in the dish stayed the same.
Waste There are new waste products in the dish. There are no waste products in the dish.
Cells The dish contains many cells. There are no cells in the dish.
What do the results of the investigation demonstrate?
