Manipulated variable: the types of soil
Responding variable: how much t the plants grow
Answer:
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Answer
:
Flammable substances
Explanation
:
<em>Flammable substances</em> will catch fire and continue to burn when they contact an ignition source like a spark or a flame.
For example, <em>methanol</em> is a flammable liquid.
A flammable solid may also catch fire through friction. <em>Matches</em> are flammable solids.
As the number of electrons added to the same principal energy level increases, atomic size generally
C. Decreases.
