why the bones are considered as biodegradable despite being discovering the bones of dinosaurs of 100000 of years old
Why do old people generally feel problems regarding movement of bones?
(a) What is meant by non-biodegradable waste materials? Give two examples of non-biodegradable wastes.
(b) Which of the following materials are biodegradable? Animal bones, Iron nails, Plastic mugs, Leather belts, Silver foil.
Which of the following bones can be categorized as small bones?