Answer:
Reactions require an input of energy to initiate the reaction; this is called the activation energy (EA).
Activation energy is the amount of energy required to reach the transition state.
The source of the activation energy needed to push reactions forward is typically heat energy from the surroundings.
For cellular reactions to occur fast enough over short time scales, their activation energies are lowered by molecules called catalysts.
Enzymes are catalysts
A. Hydrogen has like 1 electron- while oxygen has like 8. The more electrons, the more negative the charge, as electrons have a negative charge. Thus, their are polar regions. Positive hydrogen, and negative oxygen.
The tectonic plates<span> are made up of </span>Earth's<span> crust and the upper part of the mantle</span>layer<span> underneath. Together the crust and upper mantle are called the lithosphere and they extend about 80 km deep.</span>