Iron is an essential plant nutrient and the EDTA is used to chelate (bind to) the iron to prevent it from precipitating in the solution.
The use of a medium that is both selective and differential can be justified in a few ways. They allowe the growth of organisms that can be of interest. The media can also be quite useful diagnostically in medical settings.
You would use low first so you can see where it is and then you would center it and make it on the edge of the pointer. Then go to medium;center the object;go to high; center then your done!!! a 7th grader
Because it is a selective medium
Over time, free oxygen will diffuse into the agar.
Bacteria will grow in blood but no the growing medium in petri dishes should be clear agar.
In art, the medium is what a work of art is made of. I am an oil painter, so my medium is oil paint. Other artists could use acrylic paint as a medium or watercolor as a medium. A sculptor could use stone as a medium. Another would use clay as a medium for making pottery. A carver could use wood as a medium.
LB medium
That means you use "charcoal" as your medium. Or your material of choice.
fresco
The piece is done by the medium of acrylic, oil and magna.
Both conduction and convection require an intervening medium, but convection requires the medium to be able to move.
The matter that waves use to transfer energy is called the medium. The medium actually carries the energy of the wave. Sound is a good example of mechanical energy, and it requires a medium to travel. The energy created at the source is transferred into the medium, and the medium carries it forward in transmission (propagation).
paint
As a medium of exchange.
Sculpture
Yes
I would use a stick.