The kidneys in human beings are a part of the system for
nutrition
respiration
excretion
transportation
In human beings, the kidneys are a part of the system for excretion.
How are fats digested in our bodies? Where does this process take place?
What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.
What are the necessary conditions for autotrophic nutrition and what are its byproducts?
Describe double circulation of blood in human beings.Why is it necessary?