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How are the excretory systems of the three main arthropod classes constituted?
In crustaceans a pair of excretory organs known as green glands exists. The green glands collect residuals from the blood and other parts of the body. They are linked by ducts to excretory pores located under the base of the antennae and these pores release the excretions outside.
In insects small structures known as malpighian tubules gather wastes from the blood and throw them into excretory ducts that open in the intestine. In these animals excretions are eliminated together with feces.
Give three reasons why energy transfer between trophic levels is not 100 percent. Some of the organisms in a trophic level escape being eaten; some energy is kept in molecules
GLUCOSE IS OXIDISED TO PRODUCE ENERGY TO GIVE ADP TO FORM ATP
are protozoans primitive to life .
Order of classification
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What would occur to the successive trophic levels in the pyramid of energy if the rate of reproduction of phytoplankton was slowed down? Suggest two factors, which could cause l
Each of the three eukaryotic RNA polymerases has more subunits or 12 and so these are big complex enzymes. The genes encoding some of the subunits of each eukaryotic enzyme show
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