Explain What effect do rising carbon dioxide (CO2) emissions have on aquatic species whose shells and bones are composed of calcium carbonate (CaCO3)?

As human activities like driving have pumped carbon dioxide into the air, the oceans have absorbed a large portion of this gas. Richard Feely of the National Oceanic and Atmospheric Administration and his colleagues wanted to know what the effects might be on certain ocean animals that are sensitive to the chemistry of the water they live in.

Many mollusks, corals, and single-celled creatures called foraminifera and coccolithophorids use ingredients in seawater to build their shells and other hard parts. Specifically, they pull "carbonate" ions out of the water and make a hard material called "calcium carbonate."

As you might guess from the name, carbon plays an important role in the chemical reactions that allow these animals to make their homes. But, if the amount of carbon dioxide in the seawater increases above a certain level, these conditions lead to a different set of reactions that don't produce carbonate ions. In parts of the ocean that don't have enough carbonate ions, calcium carbonate shells start to dissolve.

Explanation :HOPE THIS HELPS?

    racial conflict and discrimination has existed ever since man learned to kill with rocks and bones. these conflicts arose from disputes between territory, power, wealth, religion, or simple difference. some of the most infamous racial disputes include slavery, the holocaust, and the civil rights movement.

    these listed disputes often resulted in casualties from all sides. riots, wars, imprisonment, and lynching are all commonly associated with racial conflict on severe levels.

      however, racism is an improving issue in recent decades. people are being more accepting and welcoming of diverse populations. though, the world isn't perfect and it will take much more time, if ever, until the world is rid of racism.

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el salvador  

explanation:

known as the land of volcanoes, el salvador has visit seismic tremors and volcanic movement. it is the main nation in central america that does not have a coastline on the caribbean sea. about portion of all salvadorans live in the wide open. they are poor and don't have power or running water in their homes. in 1525, pedro de alvarado, a lieutenant of cortés's, vanquished el salvador. el salvador, with alternate nations of central america, pronounced its freedom from spain on sept. 15, 1821, and was a piece of a league of central american states until the point when that association broke up in 1838.