Respiratory System

hum res sys
Respiratory sys z also called the Ventilatory sys. Ventilatory sys is the Biologicaly sys. Humans and other mammals have respiratory sys.Features of respiratory sys are lungs and respiratory muscels. Plants and Insects also have respiratory sys.

SOLAR SYSTEM

PLANETS

SOLAR SYSTEM HAVE NINE PLANTS. IN SOLAR SYSTM OUR EARTH IS ON THIRD NO. EARTH HAS ONE MOON WHICH REVOLVS AROUND THE EARTH. EARTH IS ALSO AROUND THE SUN.