Answer:
6. The number of protons of the atoms
7.The atomic number is equal to the number of protons and in a neutral atom the number of electrons
8. The atomic mass of elements equals number of protons plus number of neutrons
9. Protons and neutrons
10. Electrons
11. 8+9=17
12. 20+21=41
13. 10
Explanation:
Answer:
Plants, like all living things, need food to survive. Plants make their food using a process called photosynthesis, which means “putting together through light.” During photosynthesis, a plant traps energy from sunlight with its leaves. It also takes up water from its roots and carbon dioxide gas from the air.
Explanation:
Answer:
Las bacterias se extinguen a tasas sustanciales, aunque parecen evitar las extinciones masivas que han venido afectando a formas de vida más grandes en la Tierra.
Explanation:
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