In water molecule the electrons between the oxygen and the hydrogen are shared, but the sharing is not equal. Oxygen pulls electrons slightly towards itself. Therefore, the electrons are more near the oxygen, making that part of molecule(oxygen part) slightly negative. Since the electrons are not near the hydrogen so, that part of the molecule is slightly positive.
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There are two hydrogen atoms in a molecule of water.
The mitosis or the mitochondria
The plantae kingdom has an overwhelming majority of the producers, this may not be true. The producers are mostly present as autotrophs that make food using the sunlight. Other kingdoms like the bacteria have varied forms of producer, both the autotrophs like the cyanobacteria and the chemotrophs like halothiobacillus that use the internal heat of the Earth at the bottom of the dark ocean floor to synthesise their food.