They may be contaminated MORON.
A "petri dish"
A petri dish is a round, shallow glass container with a glass lid. See the link below for pictures of petri dishes.
a petri dish
A petri dish is a tool, not a math function. It is a shallow glass or plastic cylindrical lidded dish that biologists use to culture cells.
A Petri dish (or Petri plate or cell culture dish) is a shallow glass or plastic cylindricallidded dish that biologists use to culture cells[1]or small moss plants.[2
Because during incubation moisture will form at the top of the petri dish. Inverting the dish prevents it from dropping into whatever you have in the petri dish.
A "petri dish"
A Petri dish is a shallow glass or plastic cylindrical lidded dish that biologists use to culture cells. It was named after German bacteriologist Julius Richard Petri, who invented it when working as an assistant to Robert Koch. Glass Petri dishes can be re-used by sterilization (for example, dry heating in a hot air oven at 160 °C for one hour); plastic Petri dishes must be disposed of after one use.
beakercould be a petri dish
a petri dish is used to study small things
A Petri dish is a small, clear plastic dish that is used in science and experiments.
This is called a petri dish named after a German bacteriologist, Julius Petri.
A petri dish with divisions is . . . used to contain several media selectively and simultaneously.
The gel in a Petri dish is called "Agar".
To prevent the microorganisms from getting in the petri dish.
A petri dish is a round, shallow glass container with a glass lid. See the link below for pictures of petri dishes.
A Petri dish (or Petri plate or cell culture dish) is a shallow glass or plastic cylindricallidded dish that biologists use to culture cells[1]or small moss plants.[2