Question

Q1 choose the correct option.
1 . Birds can fly because they have
A) streamlined body
B) hollow bones
C) wings with feathers
D) all of these

2. the knee joint is an example of A pivot joint
B board and socket joint
C hinge joint
D gliding joint
​

Answer 1

Answer:

1 } All of the above

2} Hinge joint

Answer 2

Answer:

They have hollow light bones