Answer: A. Fossil
Fossil fuels release gases into the environment. These gases are pollution and they also contribute to global warming and climate change.
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➷ These are called 'Bryophtyes.'
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Isotopes are variants of a particular chemical element which differ in neutron number (neutral particle)and all isotopes of a given element have the same number of protons (positive particle) in each atom.So isotope B of the sodium will have 11 protons, 11 electrons but it may have a wide range in its number of neutrons.
An endoskeleton of calcified cartilage
Because of the soil the rocks are in. If They stayed in that soil for a while which affected the compounds, shifting the mineral composition.
