The harmful effects of materials that are invented by technology are materials that are not biodegradable. This is because the materials are synthetic materials and cause destruction to the environment.
Raw materials
The materials used to make cement are,Calcareous materials (limestone)Argillaceous materials (clay)gypsumCoal dustIron oxidemagnesiumAlkalies
you obtain genetic materials from your parents organisms.
Cardboard, metal,wood and other strong materials
who are rubt briges sons name
she is old
She not died got it
Malcolm Hall
pooh
Briges
Yes!aduh!
Ruby Bridges is not dead.
thay were 30 in 2010
an engineer
people build briges
there are 30 briges according to my information