Complete with the correct preposition.

1 The new programme is already ... use at universities and institutions throughout the world.
2 He suffers ... insomnia.
3 Their decision resulted ... disaster.
4 Chemicals are harmful ... the environment.
5 Could children in lower grades benefit ... technology?
6 According to research, modified liver cells keep diabetes ... control.
7 The seminar deals ... research in various fields of nanotechnology.
8 Environmentally friendly products are ... demand.
9 This information is secret; it is not available ... the general public.
10 My family is very important ... me because they love me and help me.