<span>In chemistry, </span>activation energy<span> is a term introduced in 1889 by the Swedish scientist Svante Arrhenius to describe the minimum </span>energy<span> which must be available to a chemical system with potential reactants to result in a chemical reaction. That is the definition of it, but I have no idea what examples you want me to see are called energy of activation</span>
Tap Root. Plants with a tap root system have a large dominant central root where other lateral roots sprout. These lateral roots are called secondary roots. Examples of plants with taproot system are: sugar beet, parsnip, carrots, radish, dandelion and beetroot.
The number of protons,neutrons,electrons, the way the are classified (earth metal, noble gas,meteoroids) and also the way they react.
Answer:
I believe the answer should be C
happy learning!
--Applepi101