Answer:
In a chemical reaction, only the atoms present in the reactants can end up in the products.
Explanation: No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
Answer:
Soil plays an important role in many ecosystems
Explanation:
Answer:
El proceso de la fotosíntesis se divide en dos etapas, la primera llamada "Lumínica" o fotodependiente y la segunda "Oscura" o fotoindependiente.
Explanation:
Formation of the Earth's Atmosphere. The early Earth was very different from our Earth today. The early Earth experienced frequent impacts from asteroids and meteorites and had much more frequent volcanic eruptions. There was no life on Earth for the first billion years because the atmosphere was not suitable for life.
