Two students were testing the amount of fertilizer that would best promote the growth of tomato plants in a garden. which of the following could be an unavoidable source of experimental error?

organisms that are both used in toothpaste as well as cause malaria are protista and monera.

it would be heredity

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

the main thing i would use is bricks because if there is a hurricane, there is a great possibility for the house to still stand. and i would also use plexiglass windows instead of regular windows because plexiglass isn't prone to breaking.