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The study that involves the research over earth atmosphere and climate changes in the past is known as the paleoclimatology. The study mainly concentrate over the past climates of Earth and atmospheric changes that took place in the past centuries. Studying fossils.
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Asthma is due to spasms in the bronchi of the lungs making the task of breathing require more effort.
An ecosystem is <span>a biological community of interacting organisms and their physical environment.</span>
