Mineral x is scratched by a diamond. mineral x

a. has a mohs hardness of 10
b. can't be scratched by a penny
c. is softer than a diamond
d. must be a precious metal

How long does it take neptune to orbit the sun?

Directions conduct research to collect information and data in order to write a well-informed argument essay responding to the following prompt: do you believe your local power company is doing enough to reduce dependence on nonrenewable energy sources? why or why not? remember that your argument essay should contain: a claim supporting evidence connected to your claim an acknowledgement of counterclaim(s) a conclusion after writing your rough draft, reread it and edit it for spelling, grammar, and clarity.

In plate tectonics, why is the north american plate tectonically inactive?