If we are talking about one single carbon atom, then 4 hydrogen atoms can be bonded to a carbon atom, because there is 4 electrons in the valence shell, and a valence shell needs 8 electrons in total, which causes the carbon to have 4 open bonds. A hydrogen has only one electron in its valence shell of 2, and needs one more to complete it. So, each hydrogen connects to 1 of 4 bonds on the carbon to complete the valence electron.
Fun fact, CH4 is methane.
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There are number of endemic species, because island isolation promotes allopatric speciation and the latter occurs when species become separated from each other to the level that prevents genetic recombination.
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A substantial part of the Amazon rainforest economy comes from illegal activities, like drug dealing, biological trade and wood cutting. Most drugs that reach Europe and United States are not farmed in the region, but Amazon rainforest serves as a path to drug dealers to deliver their production
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<em>lysosomes would not be produed and the accumulation of dead and damaged organelle and the molecules in the cell wound ultimately result to cell death</em>
