Female pelvis is larger and has a broader front them male pelvis because?

Give scientific reasons of the following statements : (i) Atlas vertebra is also called 'yes bone'. (ii) Female pelvis pelvis is larger and has a broader front than male pelvis. (iii) Osteoarthritis is more common in old people. (iv) Hydra lacks muscle tissue still it shows a variety of movement. (v) Human vertebral column shows 4 distinct curves.

Assertion. Female's pelvis is larger and has a wider bottom opening. Reason. Female has more subcutaneous fat.

Assertion: Female's pelvis larger and has a wider bottom opening. Reason: This is an adaptation for childbirth

Male frogs can croak louder than females because of

Male frogs can croak lounder than females because of

Male frogs can croak lounder than females because of

Male frogs can croak lounder than females because of

Male frogs can croak lounder than females because of

Male frogs can croak lounder than females because of