The atomic number of hydrogen is 1 (count the protons). The atomic mass number of hydrogen is also one (there are no neutrons!). For carbon, the atomic number is 6, and the atomic mass number is 12 (6 protons plus 6 neutrons). Adding the two neutrons changes our atom.
<span>Plants that get nutrients from rocks give off chemicals that cause chemical weathering. The chemicals from the plants, weather the rocks and cause them to change.
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Answer:
Phylum
Explanation: Kingdom is the first classification for living things. Phylum is the second, class is third and so on.
