The knee is an example of a simple machine in the human body. true or false

True

Explanation:

Human body is a complex machine which consists of many small machines which can be considered as body parts.

Knee can be one of the example of a simple machine which works by helping the body in walking, folding of legs, movement of legs.

Hence, the given statement is true that knee can be a simple machine in human body.

answer:

star formation begins when the denser parts of the cloud collapse under their own weight or weak gravity. the form cores of dust/gas, usually 10^4 solar masses. the cores now denser than the outer cloud, so they collapse first (again). as the cores collapse, they form clumps, which then form into protostars.

explanation: