An Embryo That Is Composed of a Hollow Ball of Cells

question 20

True/False

An embryo that is composed of a hollow ball of cells is called a blastocyst.

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Definitions:

E-book

A digital format of a book that can be read on computers or other electronic devices.

National Defense

Activities and strategies undertaken by a nation to protect itself from external threats and ensure the safety of its citizens.

Police Protection

Services provided by law enforcement agencies to ensure the safety and security of citizens, preventing crime and maintaining public order.

Free Riders

Individuals or entities that benefit from resources, goods, or services without paying for the cost of the benefit.