Calcareous ooze<span> is a form of calcium carbonate derived from planktonic organisms that accumulates on the sea floor. ... Below this depth, calcium carbonate begins to dissolve in the ocean, and only non-</span>calcareous<span> sediments are stable, such as</span>siliceous ooze<span> or pelagic red clay.</span>
Chemoautotrophs made their food by themselves using the energy from the sun. This means that an ecosystem that depends on chemoautotrophs for food is DEPENDENT ON SUNLIGHT FOR FOOD AND SURVIVAL. This is because the chemoautotrophic organisms are the primary producers in that ecosystem.
A bond, called the glycosidic bond, holds the base to the sugar and the 3′-5′ ("three prime-five prime") phosphodiester bond holds the individual nucleotides together. Nucleotides are joined from the 3′ carbon of the sugar in one nucleotide to the 5′ carbon of the sugar of the adjacent nucleotide. The 3′ and the 5′ ends are chemically very distinct and have different reactive properties. During DNA replication, new nucleotides are added only to the 3′ OH end of a DNA strand. This fact has important implications for replication.
Is important because is the key part of amino and nucleic acids.
