Cockroach Classification || Differences Between Periplanata & Blatta || Habitats And Habit Body || Exoskeleton External View

Cockroach - Taxonomy - Difference Between Periplanta & Americana & blatta & Orientalis || Morphology OF Periplanata Americana

Explain the difference between external trade and internal trade.

What is the difference between inertial mass and gravitational mass of a body?

Different between internal and external fertilization

Habits & Habitat|| Body wall/skin || locomotory organ.

State two differences between male and female cockroach?

Give two difference between male and female cockroach .