Answer:
Democritus
Explanation:
He spoke about matter was made of tiny particles which moved in empty space
Answer: No
Explanation: <em>Reactants</em> are the substances present at the beginning of a chemical reaction. In the burning of natural gas, for example, methane (CH4) and oxygen (O2) are the reactants in the chemical reaction. <em>Products </em>are the substances formed by a chemical reaction. In the burning of natural gas, carbon dioxide (CO2) and water (H2O) are the products formed by the reaction.
they pair up with other bases to make up the rungs of the DNA ladder
Endothermic or C, if you would like a reason why, do not hestitate to ask