Changes

===Notes for teachers===

===Notes for teachers===

#Amphibians are the only vertebrates possessing body structure capable of adapting both in aquatic and terrestrial habitats

#'''Amphibians are the only vertebrates possessing body structure capable of adapting both in aquatic and terrestrial habitats'''

#Their early life cycle is in aquatic medium and adulthood in terrestrial habitat

#'''Their early life cycle is in aquatic medium and adulthood in terrestrial habitat'''

#Moist skin,hind limb longer than fore limb,four fingers in fore limb ,five fingers in hind limb, are their distinguishing features.

#'''Moist skin,hind limb longer than fore limb,four fingers in fore limb ,five fingers in hind limb, are their distinguishing features.'''

#They exhibit metamorphosis  

#'''They exhibit metamorphosis '''

#They have three chambered heart,steno thermal.

#'''They have three chambered heart,steno thermal.'''

#They exhibit metamorphosis.

#'''They exhibit metamorphosis.'''

#They are unisexual,both fertilization and foetus development are external

#'''They are unisexual,both fertilization and foetus development are external'''

===Activities===

===Activities===