Paragraph 2
Scientists strengthened their
by boosting the cellulose it contains. Cellulose is the
constituent of wood. It has a
strength to
ratio than steel. The new
is hard enough to effortlessly slice through a
steak. Wooden knives are also environmentally
. They could end our dependence on
cutlery. The scientists have also developed
nails. These could help the building
because they will not rust.
