4. Number the organisms from 1 (most abundant) to 8 (least abundant) __5__ Mammals __2_ Molluscs _4_ Roundworms __1_ Arthropods __3_ Flatworms. 5. What is biodiversity (click on the purple links for definitions): ____ The many different types of organisms that exist.
Factors that Decrease BUN. 1  Low-protein diet, malnutrition or starvation (R). 2  Impaired liver activity due to liver disease (R). 3  Genetic deficiency of urea cycle enzymes (R). 4  Higher IGF-1 and growth hormone. 5  Anabolic steroids, which decreases protein breakdown. 6  Overhydration, or drinking a lot of water. 7  Pregnancy (due to increased plasma volume) (R).
Once the GFR decreases below 15, one is at high risk for needing treatment for kidney failure, such as dialysis or a kidney transplant. Blood Urea Nitrogen (BUN) Urea nitrogen comes from the breakdown of protein in the foods you eat. A normal BUN level is between 7 and 20. As kidney function decreases, the BUN level rises. This test uses sound waves to get a picture of the kidney. It may be used to look for abnormalities in size or position of the kidneys or for obstructions such as stones or tumors.