Please Check!

1. How does nanotechnology help engineers make products for the future?
a. By changing a materials atomic structure, it can be made from elements that are easier to obtain.***
b. By changing a material's atomic structure, its physical properties can also be changed.
c. By changing a material's atomic structure, it will be more useful in synthetic biology.
d. By changing a material's atomic structure, it can eliminate the need to use fossil fuels.

2. How are nanoparticles being used today?
a. Nanoparticles are already being used to deliver drugs to certain parts of the body.
b. Nanoparticles are already being used to make materials that clean themselves.
c. Nanoparticles are already being used as a substitute for fossil fuels.
d. Nanoparticles are already being used in some sunscreens.***

3. What possible solution are engineers investigating in case Earth's resources are depleted?
a. mining near-Earth asteroids
b. creating new materials through nanotechnology***
c. increasing the use of robots in harsh environments
d. developing smaller, less expensive computers

***=my answer
Thanks!