Air is a mixture of nitrogen, oxygen, carbon dioxide, water vapours and some other gases. It also contains dust particles. We can prove that air supports burning with the help of following activity: ...
1. Fill in the blanks: (a) Joints of bones help in the _____ of body. (b) A combination of bones and cartilages forms the _____ of the body. (c) Bones at the elbow are joined by a _____ joint. (d) The ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results