Jenny underwent a surgical procedure during the twentieth week of her pregnancy in which the doctors inserted a needle into her amniotic sac through her abdomen and withdrew some fluid. the fluid was then studied for any abnormalities such as signs of down syndrome and spina bifida. in this scenario, jenny underwent a procedure known as

If your blood becomes too concentrated with iona, what will happen to the red blood cells

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.