Sea urchins are preyed about by many predators that inhabit their marine environment, but also those animals that don't. The main predators of the sea urchin are crabs, large fish, sea otters, eels, birds and humans.
Interphase is the phase during which the growth of the cells take place along with the metabolic activity but the nuclear division in the cell does not occur. The three stages included within the interphase are the G1, S and G2.
Proteins are composed of simple sugars, carbohydrates are composed of nucleotides, and nucleic acids are composed of amino acids. Proteins are composed of amino acids, carbohydrates are composed of nucleotides, and nucleic acids are composed of simple sugars.Proteins are composed of nucleotides, carbohydrates are composed of simple sugars, and nucleic acids are composed of simple amino acids.Proteins are composed of nucleotides, carbohydrates are composed of amino acids, and nucleic acids are composed of simple sugars.Proteins are composed of amino acids, carbohydrates are composed of simple sugars, and nucleic acids are composed of nucleotides.Proteins are composed of simple sugars, carbohydrates are composed of amino acids, and nucleic acids are composed of nucleotides.roteins are composed of nucleotides, carbohydrates are composed of simple sugars, and nucleic acids are composed of simple amino acids. Proteins are composed of nucleotides, carbohydrates are composed of amino acids, and nucleic acids are composed of simple sugars.