The answer is water vapor.
Water is presented in the form of tiny gas particles called water vapor in the atmosphere. The clouds are formed when this invisible water vapor in the atmosphere condenses onto microscopic particles (dust, dirt,...).
<span> a characteristic of acids is that they react with metals to release hydrogen gas.</span>
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a. the Human Genome Project. HGP or Human Genome Project's goal is to sequence all chemical base pairs of the human DNA. </span>This scientific research project has revealed that there could be an approximate of 20,500 human genes.