B. Fill in the blanks. 1. Birds have_bones which help them to2. There are a total of_bones present in the skull.3. Snakes move in a_motion and press against the ground with the_help of_on their bodies in order to push forward.4. Fish, amphibians, reptiles, birds and mammals are categorised as_they have a vertebral column.5. There are_bones in an adult human being.

B. Fill in the blanks. 1. Birds have_bones which help them to2. Ther

1.	B. Fill in the blanks. 1. Birds have_bones which help them to2. There are a total of_bones present in the skull.3. Snakes move in a_motion and press against the ground with the_help of_on their bodies in order to push forward.4. Fish, amphibians, reptiles, birds and mammals are categorised as_they have a vertebral column.5. There are_bones in an adult human being.
Answer» 1:hollowExplanation:BIRDS bones are HOLLOW to make them LIGHT