Organ. An organ is a system of tissues that work together on a larger scale to do certain jobs within an animal's body. Examples of organs are the brain, heart and lungs. Anatomy is an example of a biology specialty concerned with this level.
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<span>one of the special feature of bacterial cells that helps it survive in hostile environment is its : ability to form endospores
Endospores are resistant to chemical, stress, and some form of radiations, which make bacteria abble to survive in the environement</span>
<span>Direct consequences of cumulative post-industrial emissions of carbon dioxide include increasing global temperature. </span>The oceans absorb 22 million tons of carbon dioxide every day. <span>When the oceans absorb </span>CO2, the chemical reaction that takes place produces carbonic acid (H2CO3<span>), which increases the acidity (lowers the pH) of seawater. So, the balance is ruined. </span>
