The kidneys in human beings are a part of the system for
nutrition.
excretion.
respiration.
transportation.
In human beings, the kidneys are a part of the system for excretion.
What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.
The xylem in plants are responsible for
How is oxygen and carbon dioxide transported in human beings?
The autotrophic mode of nutrition requires
Describe the structure and functioning of nephrons.
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