Answer:
The stratification of Earth into its geologic layers was brought about by the formation of the Earth's iron core. The iron core was generated by a combination of radioactive decay and gravitation, which raised the temperature enough for molten iron to form.
Explanation:
<span> There will be fewer natural resources available for future generations.
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Answer: This is a vertebrate animal with bilateral symmetry which has an endoskeleton. Most reproduce sexually through external fertilization.
Explanation:
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Fertilization, mitosis, meiosis, birth
There are 56 neutrons. To find them, you just have to subtract the atomic number with the atomic mass. If you dont know, the atomic number is the number of protons (and electrons) in an atom. The atomic mass is the number of both the protons and neutrons. Of you subtract the atomic number, you get protons.
